Review Schedule
Last reviewed May 21, 2026.
Next scheduled full review: Q1 2027. Product labels, formulas, COA access, and public disclosures may change between review cycles. Material corrections may be reviewed before the next annual update.
LPL
2026 Industry Report · Pet Skin & Coat
Best Dog Skin & Coat Supplements 2026
We scored 36 dog skin and coat supplements against the same eight criteria: dose disclosure, integumentary system coverage, barrier lipid and hydration architecture, dermal matrix and collagen support, keratin and nail nutrient logic, batch testing, claim discipline, and daily usability. Public evidence only. Pet Gala is scored separately as the publisher benchmark and is not counted in the numbered ranking below. Last reviewed May 21, 2026.
2026 Market Executive Summary
Dog skin and coat supplements are a mature shelf with a surprisingly low technical bar.
This category is easy to shop and hard to verify. Fish oil and biotin still define much of the mass-market bar, while fuller systems need to cover structure, barrier lipids, hydration, keratin, and daily usability at visible doses. The market is mature in demand, but not yet mature in transparency.
- If you want visible coat change, not just shine: look for structure, barrier lipids, hydration, and keratin support working together.
- If your pet is flaky, dull-coated, or uncomfortable: use this list to separate broad beauty systems from narrower itch, oil, or treat-format products.
- How to read our placement: Pet Gala is shown as a publisher benchmark, so the numbered list starts with the highest-scoring non-LPL product.
What stood out across the field
- 01Most products in this category use the words “skin and coat” but are structurally much narrower than buyers expect. The visible shelf is crowded with omega-only fish oils, biotin chews, and allergy or itch chews dressed up in skin and coat marketing. Only a smaller group is built across several parts of skin and coat biology; we mark them with the Integumentary Biology Focus badge.
- 02Full dose disclosure was uncommon. Many products listed impressive ingredient groups but did not show the individual milligram amount of each meaningful active. That gap lowers the score.
- 03Finished-formula clinical evidence was rare. Most products relied on ingredient-level rationale, general “shiny coat” positioning, or brand trust rather than a published trial on the exact formula sold.
- 04Fish oils matter for coat health, but they are one lane out of four. Products that lean only on omega-3 and biotin scored lower on integumentary system coverage because they do not address structural, hydration, or keratin biology.
Symbol key How to read the badges and watchouts 9 badges · 3 watchouts
Each ranking row earns badges for what the brand publishes well, and may carry up to three Worth Noting watchouts for limitations buyers should be aware of. The same rules apply to every product on this page — including Pet Gala.
Integumentary Biology Focus
The product is built around integumentary biology — structural dermal matrix, barrier lipids and hydration, keratin and follicle nutrition, plus skin barrier resilience, immune comfort, and coat-cycle support — rather than only visible coat appearance or a single ingredient class.
Every Dose Disclosed
You can see how much of each meaningful active ingredient your dog gets per serving. A long ingredient list means less if the amounts are hidden, blended together, or too small to judge.
Systems Approach
The formula covers multiple integumentary lanes — structural, barrier lipids and hydration, keratin and follicle — with meaningful actives in each lane.
Clean Formula
The active ingredients are only part of the story. This badge marks products with a simpler delivery system and fewer unnecessary extras, especially for owners who care about sugars, artificial sweeteners, heavy chew bases, or vague carriers.
Public Lab Access
The brand makes outside lab results available for shoppers to review. That gives buyers more than a trust-us quality claim — it gives them something concrete to inspect.
Lot-Specific Results
This is stronger than a generic test-results page. It means the brand lets you match your own bottle, bag, or box to test results for that specific production lot.
NASC Quality Seal
The NASC Quality Seal shows the company participates in the National Animal Supplement Council’s quality program. It is not the same as a public lab report, but it is a useful manufacturing and labeling trust signal.
Clinical Evidence Published
Many supplements use ingredients that have been studied somewhere else. This badge is rarer: it means the finished product itself has published clinical evidence, not just borrowed support from ingredient research.
Made In USA
The brand publicly states that manufacturing happens in the United States. This can matter for buyers who care about supply-chain visibility, domestic production standards, and easier accountability.
Worth Noting · three watchouts
Not necessarily dealbreakers — limitations relevant to skin and coat system scoring.
Low-Dose Concern
Some active ingredients appear to be present at levels that may be difficult to interpret as meaningful daily support based on public label information.
Dose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
Narrower Support Scope
The product appears focused on a single lane — usually omega-3 oil or biotin — rather than covering structural support, barrier lipids, hydration, and keratin biology across the full skin & coat system.
Higher scores reward
Breadth, disclosure, and substantiation.
- Coverage of multiple skin and coat lanes (structural, barrier lipids and hydration, keratin) under one daily formula.
- Per-active milligram amounts disclosed on the public label.
- Named third-party lab, published Certificate of Analysis, lot-level traceability.
- Public substantiation for marketing claims — citations, not adjectives.
Lower scores may mean
Narrower scope, or less of the work published.
- The product targets a single lane (omega oil, biotin alone) rather than multi-lane skin and coat coverage.
- Actives are listed without per-serving amounts (proprietary blends).
- Testing language is vague — no named lab, no public COA, no lot linkage.
- Claims outrun the public evidence record at time of review.
Publisher Spotlight · Scored, Not Ranked
Scored under the same rubric, held outside the competitive list.
Pet Gala is shown separately because La Petite Labs publishes this report. Under the same rubric, it scores strongly because it combines disclosed marine collagen peptides, omega 3-6-9, omega 7, ceramides, hyaluronic acid, biotin, zinc, silica, MSM, and L-carnitine in one daily formula — covering structural support, barrier lipids, hydration, and keratin biology under one disclosed framework. It is formulated for both dogs and cats with serving guidance by body weight.
Room for improvement / roadmap
- Publish finished-formula skin and coat evidence on Pet Gala itself, not only ingredient-level rationale.
- Add more species-specific palatability and long-term compliance documentation for cats and dogs.
- Keep improving batch-level testing visibility so shoppers can verify the exact product they receive.
92.8/100
Publisher benchmark · excluded from ranking
No products match
Try a brand name, manufacturer, or partial term — or .
1Rank79.2/100Solid With Gaps1RankNV-BSoft ChewNaturVet Beauty Targeted Care Soft Chews
NaturVet (a Garmon Corp brand, owned by Swedencare AB) · Soft Chew
Beauty SystemSoft Chew79.2/100Solid With GapsNaturVet Beauty Targeted Care is one of the more complete mainstream beauty chews because it includes collagen, hyaluronic acid, omegas, zinc, lutein, and biotin in one soft chew. It clearly shows active amounts, including collagen peptides 200 mg, hyaluronic acid 25 mg, omega-3 105 mg, DHA 30 mg, EPA 20 mg, zinc 2 mg, and biotin 5 mcg per chew. The catch: large dogs may need several chews per day, and there is no public lot-specific COA or named finished-product lab for this SKU.
Best forOwners who want a convenient soft chew with collagen, omegas, hydration support, and disclosed doses in one product.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Collagen peptides, hyaluronic acid, omega-3/6/9 fatty acids, DHA, EPA, lutein, zinc, biotin, egg powder, cultured buttermilk powder, and glucosamine HCl.
- A bacon-and-chicken-flavored soft chew with fully disclosed active doses and no proprietary blend hiding the main ingredients.
- NASC Quality Seal support and USA manufacturing through NaturVet and Garmon Corp.
What's not in it
- A public per-lot Certificate of Analysis or batch lookup tool for buyers.
- Ceramides, MSM, or silica for deeper barrier and keratin support.
- A low-chew routine for very large dogs, since high-weight servings can use multiple chews per day.
Label snapshotFour-lane beauty system, doses disclosedCollagen Peptides 200 mg + HA 25 mg + Omega-3 105 mg + Lutein 3 mg + Zinc 2 mg + Biotin 5 mcg per chew?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsPer-chew active doses are fully enumerated on the brand PDP and on the Amazon listing for every meaningful ingredient.Two minor friction points keep this below 10. Zinc 2 mg is disclosed without specifying the salt form (e.g., zinc gluconate vs zinc methionine), which affects bioavailability framing.Collagen Peptides (Porcine): 200 mg; Glucosamine HCl (Shellfish): 200 mg; Egg Powder: 150 mg; Cultured Buttermilk Powder: 150 mg; Omega-3 Fatty Acids (Anchovy Oil, Flaxseed, Lecithin): 105 mg; Omega-6 Fatty Acids (Flaxseed, Lecithin): 60 mg; DHA (Anchovy Oil, ORIGINS): 30 mg; Hyaluronic Acid: 25 mg; EPA (Anchovy Oil): 20 mg; Omega-9 Fatty Acids (Flaxseed, Lecithin): 20 mg; Lutein (Lute-gen): 3 mg; Zinc: 2 mg; Biotin: 5 mcg.The formula maps to multiple integumentary layers rather than a single coat-shine claim. Skin barrier and hydration are addressed by omega-3 (105 mg), omega-6 (60 mg), and hyaluronic acid (25 mg). Dermal matrix is addressed by porcine collagen peptides (200 mg) and egg powder (150 mg) as a protein and biotin-bearing matrix nutrient.The product folds in glucosamine HCl 200 mg and lutein 3 mg, which extend toward joint and eye lanes rather than tightening the integumentary architecture.Helps hydrate dry, brittle nails and fur.The barrier and hydration lanes are addressed with disclosed doses and identified sources. Omega-3 at 105 mg per chew (Anchovy Oil, Flaxseed, Lecithin) and Omega-6 at 60 mg per chew (Flaxseed, Lecithin) provide a marine-and-plant lipid combination, with EPA 20 mg and DHA 30 mg called out separately.No ceramide or phytoceramide ingredient is included, which is the most direct barrier-lipid nutrient class and would lift this toward tier 9-10.Hyaluronic Acid is a powerful ingredient that has many uses, promoting skin hydration to protect against dryness, flaking, and itching.Structural support is addressed with a disclosed protein and collagen architecture. Porcine collagen peptides are dosed at 200 mg per chew, which is the headline structural ingredient. Egg powder at 150 mg contributes whole protein, biotin precursors, and sulfur-containing amino acids relevant to coat fiber.Collagen peptide molecular-weight or hydrolysis specification (e.g., average dalton range, type I vs type III ratio) is not disclosed.Collagen Peptides (Porcine): 200 mg... Egg Powder: 150 mg... Cultured Buttermilk Powder: 150 mg.Keratin and nail logic is explicitly part of the product positioning, with 'Strong Nails' in the Amazon listing title and 'Helps hydrate dry, brittle nails and fur' in the brand benefit list.The biotin dose at 5 mcg per chew is light against dedicated keratin formulas and reaches only 25 mcg per day at the 85+ lb / 5-chew serving.Helps Support Shiny Coat, Brighter Eyes & Strong Nails with Biotin, Hyaluronic Acid, Lutein, & Omega Fatty Acids.Quality program signals are stronger than category median but stop short of public per-lot finished-product verification. NaturVet carries the NASC Quality Seal as a founding member and is manufactured by Garmon Corp, which holds NASC Preferred Supplier status through 2027-09-15, requiring annual recertification.UL audits the facility, not a per-batch finished-product spec.FDA-registered & audited; Compliant with cGMP's highest industry standards; Third-party audited by UL; NASC founding member.Claim register is mostly disciplined and species-appropriate. The product is positioned as a dog-only supplement for dogs over 12 weeks, with weight-banded serving and a vet-formulated framing.No finished-formula clinical study on Beauty Targeted Care is cited. The 'protect against...itching' phrase would read more cleanly if it were tightened to 'supports normal skin comfort' or a similar wellness frame.Hyaluronic Acid is a powerful ingredient that has many uses, promoting skin hydration to protect against dryness, flaking, and itching.Format is a bacon-and-chicken-flavored soft chew, which is the highest-acceptance format in the category and bypasses pill refusal. Weight-banded dosing covers the full canine size range from under 25 lbs through 85+ lbs in five clear steps, with half-chew dosing for small dogs.Daily cost scales aggressively at the higher weight bands — an 85+ lb dog uses 5 chews per day, which depletes a 60-count pack in 12 days and creates an ongoing-cost ceiling that affects long-term compliance.Up to 25 lbs: 1/2 soft chew; 26-40 lbs: 1 soft chew; 41-60 lbs: 2 soft chews; 61-84 lbs: 4 soft chews; 85+ lbs: 5 soft chews.Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing ↗Read comparison →1NV-BNaturVet (a Garmon Corp brand, owned by Swedencare AB) · Soft Chew · Core Beauty SystemNaturVet Beauty Targeted Care is one of the more complete mainstream beauty chews because it includes collagen, hyaluronic acid, omegas, zinc, lutein, and biotin in one soft che...Integumentary Biology FocusNASC Quality SealEvery Dose Disclosed79.2/100Solid With Gaps
2Rank66.2/100Disclosure Gaps2RankHGSoft chew66.2/100Disclosure GapsHerbsmith Glimmer is strongest as a barrier-lipid chew, especially for owners who want more than a basic fish oil treat. It discloses several oil and herb amounts, including anchovy oil, DHA Gold, krill oil, borage oil, evening primrose oil, black sesame seed, and polygonum. The catch: it does not include collagen, hyaluronic acid, ceramides, biotin, zinc, silica, or a dedicated nail-support stack.
Best forOwners who mainly want omega and GLA support for skin and coat quality in a chew format.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Anchovy oil, algae-derived DHA Gold, krill oil, borage oil, evening primrose oil, black sesame seed, and polygonum with per-chew amounts disclosed.
- A deeper lipid formula than many basic skin and coat chews, with both omega-3 and GLA-style omega-6 sources.
- NASC membership, USA manufacturing, and brand-side third-party testing language.
What's not in it
- Collagen, gelatin, hydrolyzed protein, or an amino-acid lane for dermal structure.
- Hyaluronic acid, ceramides, biotin, zinc, silica, or MSM.
- A public lot-level COA, named independent lab, or buyer-facing batch lookup.
Label snapshotMulti-oil + GLA stack with all doses disclosed · no collagen or HA laneAnchovy oil 300 mg, DHA Gold 280 mg, krill oil 28 mg, borage oil 50 mg, evening primrose oil 50 mg, black sesame seed 420 mg, polygonum 420 mg per Large Chew?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsHerbsmith publishes per-chew milligram doses for every active ingredient in Glimmer on a dedicated ingredient-detail page, separated by chew size. Large Chews disclose Black Sesame Seed at 420 mg, Polygonum at 420 mg, Anchovy Oil at 300 mg, DHA Gold at 280 mg, Borage Oil at 50 mg, Evening Primrose Oil at 50 mg, and Krill Oil at 28 mg per chew.EPA, DHA, and GLA totals are not disclosed in milligrams per chew, and a full guaranteed-analysis table with crude protein, fat, fiber, and moisture is not surfaced on the brand PDP.Large Chews: Black Sesame Seed 420 mg, Polygonum 420 mg, Anchovy Oil 300 mg, DHA Gold 280 mg, Borage Oil 50 mg, Evening Primrose Oil 50 mg, Krill Oil 28 mg.The formula maps to skin barrier (EPA, DHA, and GLA from anchovy oil, DHA Gold, krill oil, borage oil, and evening primrose oil), barrier-lipid hydration support (GLA from borage and primrose oils, which support endogenous skin oil production), antioxidant and TCM coat-quality support (black sesame seed and polygonum), and lightly to follicle and renewal pathways through the…Dermal matrix, hydration, and dedicated nail or keratin nutrient lanes are missing.Glimmer contains EPA & DHA for inflammation balance and GLA to support skin barrier repair, plus black sesame seed and polygonum as skin-supporting herbs.Barrier-lipid architecture is the strongest layer of this formula and unusually well-developed for a soft chew.No hyaluronic acid, ceramide, or other hydration ingredient is included. Adding a disclosed hydration active and publishing EPA, DHA, and GLA mg totals would lift from tier 9 toward tier 10.Large Chews: Anchovy Oil 300 mg, DHA Gold 280 mg, Borage Oil 50 mg, Evening Primrose Oil 50 mg, Krill Oil 28 mg.The Glimmer formula contains no collagen peptides, no gelatin, no marine collagen, no hydrolyzed protein, and no free-amino-acid lane mapped to dermal matrix support. The seven disclosed actives are all either lipids (anchovy oil, DHA Gold, borage oil, evening primrose oil, krill oil) or herbs (black sesame seed, polygonum).No structural-support ingredient appears in the formula. Adding disclosed collagen peptides, gelatin, marine collagen, or a hydrolyzed-protein lane with milligram disclosure would lift from tier 1 toward tier 7 to 10.Black Sesame Seed, Polygonum, Anchovy Oil, DHA Gold, Borage Oil, Evening Primrose Oil, Krill Oil; Additional ingredients in chews only: Rice Bran, Rice Flour, Sunflower Lecithin, Oat Groats, Salmon Meal, Vegetable Glycerin, Fruit Juice, Natural Grain Dextrin, Brewers Yeast, Sorbic Acid.The formula does not include a dedicated keratin or nail-support nutrient set. There is no disclosed biotin, no zinc, no silica, no sulfur donor such as MSM or cysteine, and no amino-acid building blocks that the rubric flags for full keratin and nail-support logic.No biotin, zinc, silica, sulfur donor, or amino-acid building block is disclosed as a keratin or nail-support active. Adding a disclosed keratin nutrient set with milligram disclosure would lift from tier 4 toward tier 8 to 10.Black Sesame Seed has been used for thousands of years in Chinese medicine to strengthen the skin and coat, and Polygonum has long been used to support healthy skin.Herbsmith is a National Animal Supplement Council Primary Supplier member, listed on the public NASC directory at nasc.cc, and the brand displays the NASC Quality Seal directly on the Glimmer product page.No public lot-level Certificate of Analysis program, no named third-party contract laboratory, and no buyer-accessible batch-lookup tool.Backed by the NASC Seal + 100% Quality Guarantee. Made in our own facility under veterinary oversight. Every batch meets the highest safety and quality standards. Independent third-party labs confirm what's on the label is exactly what's in the bottle.Claim language on the brand surface is generally disciplined for the category. Skin and coat support, skin barrier hydration, and coat-quality framing are positioned around omega fatty acids, GLA, and traditional herbs rather than around disease treatment.No finished-formula peer-reviewed canine or feline trial is referenced, and some downstream marketing surfaces use 'natural remedy' framing that the brand PDP does not directly qualify.Consult with your veterinarian before using this product in animals with known allergies to shellfish.Daily-use design is strong. The format is a soft chew, eliminating pill-administration friction and supporting daily palatability.Only a 60-count pack size is offered for each chew, which compresses dosing horizon for large dogs at four chews per day, and the brand PDP does not surface customer-review signal at capture.Small Chews — under 10 lbs: 1; 10-19 lbs: 2; 20-29 lbs: 3; 30-59 lbs: 4. Large Chews — under 30 lbs: 1; 30-59 lbs: 2; 60-99 lbs: 3; over 100 lbs: 4. Cats — under 10 lbs: 1 Small Chew; 10-19 lbs: 2 Small Chews. Puppies and kittens: same as dogs.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →2HGHerbsmith · Soft chewHerbsmith Glimmer is strongest as a barrier-lipid chew, especially for owners who want more than a basic fish oil treat. It discloses several oil and herb amounts, including anc...NASC Quality SealEvery Dose DisclosedMade In USA66.2/100Disclosure Gaps
3Rank65.8/100Disclosure Gaps3RankTCLiquid65.8/100Disclosure GapsTaily Collagen is a strong structural skin-and-coat liquid because it gives large headline amounts of collagen and biotin. The label shows grass-fed hydrolyzed collagen peptides 1000 mg per mL and biotin 5000 mcg per mL, with vitamin C and hyaluronic acid also included. The catch: it has no omega or ceramide lane, and vitamin C and hyaluronic acid amounts are not publicly shown.
Best forOwners who want a liquid collagen-and-biotin supplement for dogs or cats and do not need omega support in the same product.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingDose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Grass-fed hydrolyzed collagen peptides 1000 mg per mL and biotin 5000 mcg per mL.
- Vitamin C and hyaluronic acid are included, though their per-mL amounts are not disclosed.
- A bacon-flavored liquid format with simple weight-banded dosing.
What's not in it
- Omega-3, omega-6, EPA, DHA, ceramides, or phytoceramides for the skin barrier lane.
- Publicly disclosed amounts for vitamin C or hyaluronic acid.
- A public batch-level COA, named analytical lab, or NASC directory listing.
Label snapshotTwo doses disclosed, two undisclosedCollagen 1000 mg + Biotin 5000 mcg + Vitamin C + Hyaluronic Acid per 1 mL?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsTwo of the four named actives carry disclosed per-mL doses, and two do not. Grass-fed collagen peptides are disclosed at 1000 mg per 1 mL and biotin is disclosed at 5000 mcg per 1 mL across the Chewy listing, the brand PDP, the Chewy Q&A page, and the Amazon listing. These are the headline ingredients and the disclosed amounts are aggressive for a liquid collagen format.Two of the four named actives — vitamin C and hyaluronic acid — are not disclosed at a per-mL milligram level on any public surface (Chewy, brand PDP, Amazon, Q&A).Each 1 ml serving contains 1000mg of collagen and 5000mcg of biotin.The formula maps to four integumentary lanes rather than a single oil claim. Dermal matrix is addressed by grass-fed hydrolyzed collagen peptides at 1000 mg per 1 mL. Keratin and follicle support is addressed by biotin at 5000 mcg per 1 mL. Hydration is addressed by hyaluronic acid.No dedicated barrier-lipid lane is present. There is no omega-3, omega-6, EPA, DHA, ceramide, or phytoceramide ingredient, so the lipid layer of the skin barrier is left uncovered.The advanced formula combines the power of Grass-Fed Collagen Peptides, Biotin, Vitamin C, and Hyaluronic Acid to promote your furry friend's skin and coat health.The hydration lane is named directly through hyaluronic acid, which carries the moisturization claim in the marketing register ('moisturizes and nourishes your pet's skin'). Vitamin C supports the structural-protein-hydration framing through collagen-cofactor logic. The brand explicitly connects HA to dryness and flakiness messaging.The barrier-lipid half of this criterion is materially absent. The formula contains no omega-3 (EPA/DHA), no omega-6 (linoleic, GLA), no ceramide, no phytoceramide, and no plant-oil lipid lane.Moisturizes and nourishes your pet's skin, promoting a soft and smooth texture, with no more itchiness or flakiness.Dermal matrix is the strongest lane in this formula by design. Grass-fed hydrolyzed collagen peptides are disclosed at 1000 mg per 1 mL serving, which is a category-aggressive headline dose for a liquid format.Three documentation gaps keep this below tier 9-10. The collagen peptide molecular-weight specification (average dalton range, expected absorption profile) is not disclosed.Each 1 ml serving contains 1000mg of collagen and 5000mcg of biotin.Keratin and nail logic is explicitly part of the product positioning. Biotin is disclosed at 5000 mcg per 1 mL, which is a category-aggressive headline biotin dose — at the 25-50 lb daily band the biotin exposure reaches 10,000 mcg per day, and at the 50+ lb band it reaches 15,000 mcg per day.No zinc, no silica, no MSM, no methionine, and no sulfur-donor ingredient is included to broaden the keratin-formation architecture beyond biotin alone. The biotin USP grade is not named.Watch your pet's nails grow stronger and healthier with regular use, saying goodbye to brittle nails.Quality program signals are limited and verification-light. The brand claims 'GMP-certified production with strict quality controls from raw materials to your door,' 'human-grade manufacturing facility,' 'Made in the USA,' and 'every batch is third-party tested for purity.' The named manufacturing partner is not surfaced on the brand PDP or About page.To reach tier 7-10 the brand would need at least one of: a public per-lot Certificate of Analysis, a buyer-accessible batch lookup tool, a named third-party analytical lab tied to a specific Taily Collagen batch, or a verifiable NASC…GMP-certified production with strict quality controls from raw materials to your door.The claim register sits visibly on the disease-adjacent edge of this rubric. The Amazon listing title carries the phrase 'Itch Relief for Dogs with Allergies,' which is the strongest single piece of disease-adjacent language across the surveyed competitor set in this category.Three elements push this into tier 4 rather than tier 7-8. First, 'Itch Relief for Dogs with Allergies' in the Amazon listing title is disease-adjacent positioning rather than a hydration or skin-barrier wellness frame.Itch Relief for Dogs with Allergies, Biotin, Vitamin C and Hyaluronic Acid | Made in USA.Format is a bacon-flavored liquid dosed by dropper, which is a high-acceptance presentation that bypasses pill refusal and works for both dogs and cats. Weight-banded daily serving is clear (under 25 lbs = 1 mL, 25-50 lbs = 2 mL, 50+ lbs = 3 mL), with the option to dispense directly into the mouth or drizzle over food or water.Dropper precision is the most-cited friction point in customer reviews — multiple reviewers note that not all of the product dispenses cleanly from the dropper and that they switch to a measuring teaspoon.Pets enjoy the taste and take it willingly with no problem or hassle.Last reviewed: May 21, 2026Sources: Retailer listing · Product page · Regulatory filing ↗Read comparison →3TCTaily · Liquid · Core Beauty SystemTaily Collagen is a strong structural skin-and-coat liquid because it gives large headline amounts of collagen and biotin. The label shows grass-fed hydrolyzed collagen peptides...Integumentary Biology FocusMade In USADose Disclosure Limited65.8/100Disclosure Gaps- 4PVNestle Purina Veterinary Diets · Soft Chew · Core True All-in-OnePurina Pro Plan Veterinary Supplements Skin Care is a soft chew built around disclosed skin-support actives rather than an unnamed blend. The label gives per-chew doses for cod ...Integumentary Biology FocusNASC Quality SealEvery Dose Disclosed65.2/100Disclosure Gaps
5Rank63.6/100Disclosure Gaps5RankNPAir-dried chewNative Pet Skin+Coat Chews
Native Pet (St. Louis, MO) · Air-dried chew
Beauty SystemAir-dried chewProprietary Blend63.6/100Disclosure GapsNative Pet Skin+Coat Chews have one of the broadest ingredient lists outside La Petite Labs, with collagen, DHA, salmon oil, hyaluronic acid, biotin, zinc, echinacea, and probiotics in one air-dried chew. The formula is vet-developed and uses a simple chicken-based chew format that should be easy for many owners to use daily. The catch: none of the ten actives show per-chew amounts, and the probiotic blend is still grouped rather than broken out by strain amount.
Best forOwners who want a broad skin-and-coat chew and care more about ingredient breadth than exact dose disclosure.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingLow-Dose Concern
Some active ingredients appear to be present at levels that may be difficult to interpret as meaningful daily support based on public label information.
Dose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Bovine collagen peptides, porcine collagen, DHA, salmon oil, vitamin E, echinacea, zinc proteinate, hyaluronic acid, biotin, and a four-strain probiotic blend.
- An air-dried chicken chew with simple dosing of one chew per 25 lb daily.
- A formula developed by board-certified veterinary nutritionist Dr. Dan Su.
What's not in it
- Public per-chew milligram amounts for the ten listed actives.
- Public COA access, a named independent lab, or a buyer-facing batch lookup.
- A clearly shown NASC Quality Seal on the Skin+Coat Chew product surfaces reviewed.
Label snapshot · proprietary10 actives · per-chew mg NOT disclosedCollagen Peptides (Bovine)?Collagen (Porcine)?DHA (Microalgae)?Salmon Oil?Vitamin E?Echinacea Angustifolia?Zinc Proteinate?Hyaluronic Acid?Biotin?Proprietary Probiotic Blend?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsAll ten active ingredients are named on the brand PDP and across retailer listings, and the probiotic blend is unusually transparent in naming its four strains by species (Lactobacillus casei, L. fermentum, L. reuteri, Enterococcus faecium).No per-chew milligram disclosure for any of the ten actives, and probiotic CFU per chew is hidden inside a proprietary blend.Active Ingredients: Collagen Peptides (Bovine), Collagen (Porcine), DHA (Microalgae Based Omega-3), Salmon Oil, Vitamin E, Echinacea Angustifolia, Zinc Proteinate, Hyaluronic Acid, Biotin, Proprietary Probiotic Blend (Lactobacillus casei, L. fermentum, L. reuteri, Enteroccoccus faecium).The formula maps to multiple integumentary lanes rather than a single shine claim. Dermal structure is addressed through two collagen sources (bovine collagen peptides and porcine collagen). Barrier-lipid substrate is addressed through DHA (microalgae-based omega-3), salmon oil, and vitamin E as a lipid-protective antioxidant. Hydration is addressed through hyaluronic acid.Score stops at 8 rather than 9-10 because follicle-specific support is implied through related keratin nutrients rather than separated as a distinct pathway, and because dose opacity prevents the buyer from confirming that each lane…10 active ingredients, including biotin, collagen, and hyaluronic acid, to support skin and coat health.The barrier-lipid lane is multi-source rather than single-oil: DHA from microalgae plus salmon oil contribute long-chain omega-3 fatty acids (EPA / DHA substrate) and salmon oil also contributes omega-6 and lipid-soluble vitamins, while vitamin E acts as a lipid-protective antioxidant against fatty-acid oxidation.Ceramides are absent and per-chew mg for DHA, salmon oil, and hyaluronic acid are not disclosed. Adding a ceramide source and publishing per-chew mg for omega and HA components would lift toward tier 9-10.DHA (Microalgae Based Omega-3), Salmon Oil, Vitamin E ... Hyaluronic Acid ... formulated to nourish and moisturize the skin to support your pup's lustrous, shiny coat.Dual collagen sources are named: hydrolyzed bovine collagen peptides and porcine collagen. Two collagen actives in a 25-lb-band chicken chew is structurally relevant to dermal matrix and coat fiber and is uncommon in the skin-coat chew category, where most competitors lean on omega oils alone.Per-chew milligram disclosure for bovine collagen peptides and porcine collagen is missing, and no broader matrix-support nutrients (gelatin, whey protein, bone broth, MSM, or specific amino acids) accompany the two collagen sources.Active Ingredients: Collagen Peptides (Bovine), Collagen (Porcine), DHA (Microalgae Based Omega-3), Salmon Oil ...Two keratin-relevant nutrients are named at the active-ingredient level: biotin (a cofactor in keratin synthesis and a standard skin-coat nutrient) and zinc proteinate (a chelated zinc source relevant to keratin formation, normal coat renewal, and skin integrity).Per-chew biotin (mcg) and zinc proteinate (mg) doses are not disclosed, and no silica, MSM, or sulfur-amino donor supplements the keratin lane. Disclosing biotin and zinc per chew and adding silica or MSM would lift toward tier 9-10.Zinc Proteinate, Hyaluronic Acid, BiotinNo third-party laboratory (NSF, Eurofins, or equivalent) is named on the brand PDP, the brand landing page, the press release reviewed, or the retailer listings examined. No public Certificate of Analysis program is referenced. No lot-level batch-lookup tool is provided to buyers.Third-party lab not named, no public COA, no batch-lookup tool, and no NASC Quality Seal surfaced for the Skin+Coat Chew.Clinically researched ingredients in every formula.Species-appropriate framing is present: the chew is dog-specific, the dosing rule scales by canine body weight at 1 chew per 25 lbs, the lower age cutoff is stated as dogs over 3 months, and the formulator is a board-certified veterinary nutritionist (Dr. Dan Su, MS, DVM, DACVIM Nutrition).'Ditch the itch' framing sits at the boundary of disease-adjacent language for a non-drug supplement and a finished-formula canine trial on the daily Skin+Coat Chew is not referenced.Designed to help dogs ditch the itch while supporting excess shedding.Daily-usability design is among the strongest in the competitor set. The format is an air-dried chicken chew with a jerky-style texture rather than a soft chew with sugar or sweetener binders; the inactive list is just three ingredients (chicken, coconut glycerin, mixed tocopherols) with 'no soy or gluten' positioning.Score stops below 10 because the air-dried chicken format may be unsuitable for chicken-allergic dogs and that allergen guidance is not surfaced prominently at point of purchase, and because subscription cadence and storage / shelf-life…Use 1 chew for every 25 lbs of dog body weight (example: a 40 lb. dog would receive 2 chews). Use daily.Last reviewed: May 21, 2026Sources: Product page · Manufacturing page · Retailer listing · Regulatory filing ↗Read comparison →5NPNative Pet (St. Louis, MO) · Air-dried chew · Core Beauty SystemNative Pet Skin+Coat Chews have one of the broadest ingredient lists outside La Petite Labs, with collagen, DHA, salmon oil, hyaluronic acid, biotin, zinc, echinacea, and probio...Integumentary Biology FocusClean FormulaMade In USALow-Dose ConcernDose Disclosure Limited63.6/100Disclosure Gaps
6Rank59.2/100Disclosure Gaps6RankVSSoft chewVetriScience Veterinary Strength Allergy & Itch Support (Derma Strength Pro)
VetriScience Laboratories (a FoodScience LLC brand) · Soft chew
Related BenchmarkSoft chew59.2/100Disclosure GapsVetriScience Derma Strength Pro is a skin-aisle allergy and itch support chew with unusually clear active dosing. It discloses quercetin phytosome 125 mg, omega-6 65 mg, perilla seed extract 40 mg, omega-3 26 mg, hyaluronic acid 5 mg, and Oligonol 5 mg per chew. The catch: it is more barrier-and-antioxidant focused than a complete skin-and-coat system, with no collagen, biotin, zinc, silica, or MSM.
Best forOwners who want a vet-channel chew focused on seasonal skin comfort and disclosed active doses.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Quercetin phytosome, omega-6, perilla seed extract, omega-3, hyaluronic acid, and Oligonol with per-chew amounts disclosed.
- A duck-flavored soft chew with weight-banded dosing and an optional loading period.
- NASC Quality Seal support, SQF-certified manufacturing, FDA-registered facility language, and USA manufacturing.
What's not in it
- Collagen, gelatin, hydrolyzed protein, or amino acids for dermal matrix support.
- Biotin, zinc, silica, MSM, or other dedicated keratin and nail nutrients.
- A broad beauty-system architecture beyond the allergy, lipid, hydration, and antioxidant lanes.
Label snapshotAll six actives dose-disclosed per chew · no proprietary blendsQuercetin Phytosome 125 mg, Omega 6 65 mg, Perilla seed 40 mg, Omega 3 26 mg, Hyaluronic Acid 5 mg, Oligonol 5 mg?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe veterinary-channel PDP and an independent retailer both publish the full per-chew active-dose table with no proprietary blends: Quercetin Phytosome 125 mg, Omega 6 65 mg, Perilla seed extract 40 mg, Omega 3 26 mg, Hyaluronic Acid 5 mg, Oligonol 5 mg in a 2 g chew.Per-active doses are disclosed for every meaningful ingredient, but the consumer-facing brand PDP buries the full table behind the veterinary-channel mirror.Quercetin Phytosome™ 125 mg, Omega 6 Fatty Acids 65 mg, Perilla frutescens Seed Extract 40 mg, Omega 3 Fatty Acids 26 mg, Hyaluronic Acid (HyaMax® Low Molecular Weight Sodium Hyaluronate) 5 mg, Oligonol® 5 mg.Coverage is concentrated in two integumentary domains: skin barrier lipids (omega 3 and 6 fatty acids) and skin hydration (low-molecular-weight hyaluronic acid). A third domain — barrier-related antioxidant tone via quercetin phytosome, perilla, and Oligonol — is positioned for histamine and oxidative-stress modulation rather than for structural skin and coat outcomes.Adding disclosed collagen, gelatin, amino-acid, biotin, zinc, or silica content would broaden coverage from the current 2-3 integumentary lanes (barrier lipids, hydration, antioxidant tone) toward the 5-6 domain coverage required for tier…Promotes structural integrity of the epidermis.Barrier-lipid and hydration logic is the most coherent part of the formula. Omega 6 fatty acids at 65 mg and Omega 3 fatty acids at 26 mg per chew (sourced through flaxseed meal, flaxseed oil, and safflower oil in the inactive list) cover the lipid layer with a roughly 2.5:1 omega-6 to omega-3 ratio.Ceramide-class nutrients and a published rationale for the 2.5:1 omega-6 to omega-3 ratio are absent. A higher absolute omega-3 dose (EPA/DHA specification rather than 'Omega 3 Fatty Acids' as a category total) would lift toward tier 9-10.Omega 6 Fatty Acids 65 mg ... Omega 3 Fatty Acids 26 mg ... Hyaluronic Acid (HyaMax® Low Molecular Weight Sodium Hyaluronate) 5 mg.No collagen peptides, gelatin, structural amino acids, or other dermal-matrix nutrients are disclosed in the active or inactive ingredient lists. The formula's claim to 'promote structural integrity of the epidermis' rests on barrier-lipid and antioxidant logic rather than on a dermal-matrix architecture.Adding disclosed collagen, gelatin, protein, or amino-acid actives in a meaningful per-chew dose would lift this from tier 1-2 toward tier 7-10. The current architecture does not address the dermal matrix.Active Ingredients per 2 g chew: Quercetin Phytosome™ 125 mg, Omega 6 Fatty Acids 65 mg, Perilla frutescens Seed Extract 40 mg, Omega 3 Fatty Acids 26 mg, Hyaluronic Acid 5 mg, Oligonol® 5 mg.No biotin, zinc, silica, sulfur donors (MSM, methionine, cysteine), or other keratin- and nail-relevant nutrients are disclosed in either the active or inactive ingredient lists. The brand positions the chew as allergy and itch support with structural-epidermis language, but the keratin, nail, and follicle layer is not covered by the formulation.Adding biotin, zinc, silica, MSM, or methionine at disclosed per-chew doses would lift this from tier 1-2 toward tier 7-10. As-formulated, the keratin and nail layer is unaddressed.Active Ingredients per 2 g chew: Quercetin Phytosome™ 125 mg, Omega 6 Fatty Acids 65 mg, Perilla frutescens Seed Extract 40 mg, Omega 3 Fatty Acids 26 mg, Hyaluronic Acid 5 mg, Oligonol® 5 mg.Testing posture is strong on the framework side and modest on the public-document side. Parent company FoodScience LLC is a NASC Primary Supplier and NASC Quality Seal holder — the highest NASC tier, verified independently by NASC's own supplier directory. The Williston, VT manufacturing facility is SQF-certified, FDA-registered, and operated under FDA cGMP.A public per-lot COA program, a batch-lookup tool, and a named third-party laboratory (NSF, Eurofins, etc.) would lift this from tier 7 toward tier 9-10. The current setup is credible institutionally but not batch-linked for buyers.Our facilities in Vermont are SQF-certified and adhere to FDA's current Good Manufacturing Practices (cGMP). Each ingredient undergoes third-party testing for purity and composition.Claim discipline is mixed.Tightening the retail claim register away from 'clinical-strength support for seasonal and environmental allergies' and 'helps relieve itchy skin' toward the brand-PDP 'occasional discomfort' framing would lift toward tier 8-9.Supports cats and dogs with occasional discomfort or itching ... support healthy histamine levels.Daily-use design is practical. Duck-flavored soft chew with hydrolyzed duck flavor as the palatant, 2 g chew size, weight-banded 1-3 chew daily dosing, double-dose loading for the first four weeks, and dual-species (dog and cat) labeling on a single SKU. Retail distribution through Chewy at 60- and 90-count package sizes supports long-horizon supplementation.A published subscription cadence, explicit storage and shelf-life guidance, and a named third-party palatability study would lift from tier 8 toward tier 9-10.Dogs 0-25 lbs: 1 chew daily; Dogs 26-50 lbs: 2 chews daily; Dogs 51+ lbs: 3 chews daily. For extra support, the dose can be doubled for the first 4 weeks.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing ↗Read comparison →6VSVetriScience Laboratories (a FoodScience LLC brand) · Soft chewVetriScience Derma Strength Pro is a skin-aisle allergy and itch support chew with unusually clear active dosing. It discloses quercetin phytosome 125 mg, omega-6 65 mg, perilla...NASC Quality SealEvery Dose DisclosedMade In USA59.2/100Disclosure Gaps
7Rank58/100Disclosure Gaps7RankNNLiquid (also softgels)Nordic Naturals Omega-3 Pet
Nordic Naturals · Liquid (also softgels)
Related BenchmarkLiquid (also softgels)58/100Disclosure GapsNordic Naturals Omega-3 Pet is the cleanest fish-oil benchmark in this group, especially for buyers who care about freshness and batch testing. It delivers EPA 736 mg and DHA 506 mg per teaspoon from anchovy and sardine oil, with public lot-number COA lookup for potency, contaminants, and freshness markers. The catch: it is only an omega-3 product, so it does not cover collagen, hydration, keratin, nails, or broader skin-structure support.
Best forOwners who specifically want a high-quality fish oil and are not expecting a complete skin, coat, and nail system.
Integumentary Biology Focus Every Dose DisclosedClean FormulaPublic Lab AccessLot-Specific ResultsNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Anchovy and sardine oil in re-esterified triglyceride form, with EPA and DHA amounts clearly shown per teaspoon.
- A public lot-number COA lookup for measured omega potency, heavy metals, PCBs, and freshness markers.
- A pet-specific formula without the rosemary oil or flavorings used in some human fish oils.
What's not in it
- Collagen, gelatin, amino acids, hyaluronic acid, ceramides, biotin, zinc, silica, or MSM.
- A chew format for owners who dislike liquid oil dispensing.
- A full four-lane skin, coat, barrier, and nail formula.
Label snapshotPure fish oil · no collagen, HA, or keratin lane · public batch COAAnchovy + sardine oil (rTG), 736 mg EPA / 506 mg DHA / 1,518 mg total omega-3 per tsp, d-alpha tocopherol preservative?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsActive doses are disclosed in milligrams per serving, not percentages. The 8 fl oz liquid for medium and large dogs discloses 736 mg EPA, 506 mg DHA, and 1,518 mg total omega-3 per 1 teaspoon (5 mL), and the 2 fl oz small-pet liquid discloses 142 mg EPA, 92 mg DHA, and 294 mg total omega-3 per 1 mL.Per-serving EPA and DHA are stated as label minimums with batch variance, and the actual measured potency for a specific bottle requires the buyer to enter a lot number into the COA lookup.Per 1 Teaspoon/5mL Serving — Total Omega-3 Fatty Acids: 1,518 mg (minimum); EPA: 736 mg (minimum); DHA: 506 mg (minimum).Omega-3 Pet is a pure fish oil. The only actives are EPA and DHA delivered from wild-caught anchovy and sardine oil in triglyceride form, with d-alpha tocopherol present as a preservative rather than as a scored vitamin E dose.Hydration, dermal matrix, structural protein, and a dedicated keratin or nail lane are absent. This is a category-architecture decision rather than a formulation oversight — Omega-3 Pet is intentionally a fish oil.Anchovy oil, sardine oil, d-alpha tocopherol (a preservative).The barrier-lipid half of this criterion is the strongest layer of any product in this rubric. Two wild-caught fish sources (anchovy and sardine) deliver EPA and DHA in re-esterified triglyceride form, which the brand and broader nutrition science position as more bioavailable than ethyl-ester form.No hyaluronic acid, ceramide, or named hydration ingredient is included. Adding a disclosed hydration active would lift from tier 7 toward tier 9 to 10.Omega-3 fish oils come in re-esterified triglyceride-form (rTG) and triglyceride-form (TG)... triglyceride form omega-3s are better absorbed than ethyl ester form.There is no collagen, no gelatin, no marine collagen, no hydrolyzed protein, no amino-acid lane, and no matrix-support ingredient in the formula. The complete ingredient list is anchovy oil, sardine oil, and d-alpha tocopherol as a preservative.No structural-support ingredient is present. Adding disclosed collagen peptides, gelatin, marine collagen, or a hydrolyzed-protein lane with milligram disclosure would lift from tier 1 toward tier 7 to 10.Anchovy oil, sardine oil, d-alpha tocopherol (a preservative).There is no biotin, no zinc, no silica, no sulfur donor such as MSM or cysteine, and no amino-acid building block in the formula. The only ingredients are anchovy oil, sardine oil, and d-alpha tocopherol as a preservative. Nails are not addressed in brand positioning, and follicle support is not mapped through any keratin-relevant nutrient.No keratin-relevant nutrient is present in the formula. Adding biotin, zinc, silica, or a sulfur donor with disclosed dosing would lift from tier 1 toward tier 8 to 10.Anchovy oil, sardine oil, d-alpha tocopherol (a preservative).Testing transparency is the strongest layer of this product and one of the strongest in the rubric overall. Nordic Naturals operates a public, batch-level Certificate of Analysis program at nordic.com/cofa-results that any buyer can use by entering the lot number printed by the expiration date on the bottle.Pet buyers must enter a lot number into a brand-level lookup tool rather than seeing the batch-specific COA linked directly from the Omega-3 Pet product page.Every Nordic Naturals product is tested to verify potency, purity, and freshness by certified laboratories... Certificates of Analysis (COAs) are available for each product Nordic Naturals makes.Claim language is disciplined and category-appropriate. Brand surfaces position Omega-3 Pet as supporting a soft and shiny coat, healthy joint function, eye health, brain health, and cognitive function — wellness framing, not disease treatment, and consistent with category-level EPA and DHA evidence in dogs.No finished-formula peer-reviewed canine trial is referenced for Omega-3 Pet specifically, and the brand's claim evidence rests on category-level EPA and DHA reasoning.Omega-3 Pet does not contain rosemary oil, or flavorings, in order to ensure the safety of your pets.Daily-use design is strong for an oil product. The format is offered as both liquid (2 oz, 8 oz, 16 oz) and softgels (90 and 180 count), with bottle size matched to dog weight band — the 2 oz SKU sized for cats and small dogs, the 8 oz for medium to large breeds, and the 16 oz for large to very large dogs.Liquid dispensing is widely noted as messy in product reviews, and refrigeration after opening adds household friction.10-19 lbs: 1 soft gel daily; 20-39 lbs: 2 soft gels daily; 40-59 lbs: 3 soft gels daily; 60-79 lbs: 4 soft gels daily; 80-110 lbs: 5 soft gels daily; 111-130 lbs: 6 soft gels daily.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →7NNNordic Naturals · Liquid (also softgels)Nordic Naturals Omega-3 Pet is the cleanest fish-oil benchmark in this group, especially for buyers who care about freshness and batch testing. It delivers EPA 736 mg and DHA 50...Lot-Specific ResultsNASC Quality SealEvery Dose Disclosed58/100Disclosure Gaps
8Rank58/100Disclosure Gaps8RankMLSoft ChewThe Missing Link Collagen Care Soft Chews Skin & Coat
The Missing Link (a W.F. Young, Inc. / Absorbine brand) · Soft Chew
Beauty SystemSoft Chew58/100Disclosure GapsThe Missing Link Collagen Care is a practical collagen-and-omega chew with more structure than a basic fish oil treat. It discloses marine collagen 100 mg, omega-3 167 mg, omega-6 75 mg, and omega-9 47 mg per chew. The catch: it does not show separate EPA or DHA amounts and does not include hyaluronic acid, ceramides, biotin, zinc, silica, or MSM.
Best forOwners who want a simple soft chew that combines marine collagen with omega fatty acids.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Marine collagen 100 mg plus omega-3, omega-6, and omega-9 fatty acids per chew.
- A bacon-flavored soft chew from The Missing Link under the W.F. Young and Absorbine parent company.
- NASC Quality Seal imagery, USA manufacturing language, and broad retail availability.
What's not in it
- Separate EPA and DHA amounts for buyers who want precise fish-oil benchmarking.
- Hyaluronic acid, ceramides, biotin, zinc, silica, or MSM.
- A public lot-level COA, named independent lab, or buyer-facing batch lookup.
Label snapshotThree-lane collagen + omega + moisture systemMarine Collagen 100 mg + Omega-3 167 mg + Omega-6 75 mg + Omega-9 47 mg per chew?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsPer-chew active doses are disclosed for the four named actives on the Guaranteed Analysis: Linolenic Acid (Omega-6) 75 mg, Alpha Linolenic Acid (Omega-3) 167 mg, Oleic Acid (Omega-9) 47 mg, and Collagen (Marine Source) 100 mg per 1 chew (3 g). The full inactive ingredient list is enumerated by identity. Format, serving size, and weight-banded dosing are clear.Three friction points keep this below tier 8-10. First, EPA mg and DHA mg are not separately disclosed even though fish oil concentrate is named in the inactive panel and the product is publicly described as containing fish oil.Linolenic Acid (an Omega-6 Fatty Acid): 75 mg; Alpha Linolenic Acid (an Omega-3 Fatty Acid): 167 mg; Oleic Acid (an Omega-9 Fatty Acid): 47 mg; Collagen (Marine Source) 100 mg.The formula maps to three integumentary lanes rather than a single shine claim. Dermal matrix is addressed by marine collagen 100 mg per chew with marketing language explicitly invoking Type I and Type III collagen for skin and nail roles.Two integumentary lanes that this rubric scores most generously are absent. A hydration lane (hyaluronic acid, ceramides, or named phytoceramide) is not present at any disclosed dose.Collagen, Omegas, Coconut Oil and Fish Oil to promote a glossy coat, help maintain moisture levels and support hair growth and a healthy coat.The barrier-lipid lane is built from a multi-source omega-fatty-acid stack. Omega-3 totals 167 mg per chew as Alpha Linolenic Acid from ground flax with a fish oil concentrate contribution, Omega-6 totals 75 mg as Linolenic Acid, and Omega-9 totals 47 mg as Oleic Acid.The disclosure stops at the fatty-acid class level, so the EPA mg and DHA mg actually contributed by the fish oil concentrate are not visible to the buyer.Linolenic Acid (an Omega-6 Fatty Acid): 75 mg; Alpha Linolenic Acid (an Omega-3 Fatty Acid): 167 mg; Oleic Acid (an Omega-9 Fatty Acid): 47 mg.Structural support is the headline lane and the reason this product is classified as a core skin/coat/barrier system. Marine collagen at 100 mg per chew is the disclosed structural ingredient, sourced from fish skin per the brand narrative.Three structural gaps keep this in tier 6 rather than tier 8-10. First, the Type I and Type III collagen claim is not backed by a per-type mg split inside the 100 mg marine collagen total.Collagen (Marine Source) 100 mg ... 70% of a dog's skin and coat is made up of collagen, a primary protein.The keratin and nail register is invoked in the marketing copy but is not matched by a disclosed nutrient stack at the active-ingredient level.This is the formula's weakest integumentary lane.Type 1 & 3 collagen helps support strong nails and healthy coat.Testing-transparency signals are mixed and stop short of public per-lot finished-product verification for the Missing Link Collagen Care Skin & Coat soft chew. On the positive side, the back-label imagery on the brand PDP shows the NASC Quality Seal, the parent W.F. Young, Inc.To reach tier 7-8 the brand would need to name the Missing Link line explicitly on the NASC supplier surface, publish a per-lot finished-product COA or a buyer-accessible batch lookup tool, and name a third-party finished-product…Absorbine has been dedicated to horse care since 1892. Our extensive portfolio of horse care products includes Absorbine Veterinary Liniment for equine muscle and joint care, UltraShield equine fly control products, Hooflex hoof care products, and ShowSheen grooming products, as well as a complete portfolio of equine nutritional supplements.The claim register is mostly disciplined and species-appropriate.Two friction points keep this below tier 9-10.Collagen, Omegas, Coconut Oil and Fish Oil to promote a glossy coat, help maintain moisture levels and support hair growth and a healthy coat.Format is a bacon-flavored soft chew, which is the highest-acceptance format in the category and bypasses pill refusal. Weight-banded dosing covers the full canine size range in three steps - 1-2 chews per day for dogs under 25 lbs, 2-4 chews per day for 26-75 lbs, and 4-5 chews per day for 76+ lbs - with half-chew flexibility implied for small dogs.Two compliance frictions keep this below tier 9-10.For dogs under 25 pounds, administer 1 to 2 chews daily. For dogs 26 to 75 pounds, administer 2 to 4 chews daily. For dogs greater than 76 pounds, administer 4 to 5 chews daily.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing ↗Read comparison →8MLThe Missing Link (a W.F. Young, Inc. / Absorbine brand) · Soft Chew · Core Beauty SystemThe Missing Link Collagen Care is a practical collagen-and-omega chew with more structure than a basic fish oil treat. It discloses marine collagen 100 mg, omega-3 167 mg, omega...Integumentary Biology FocusNASC Quality SealEvery Dose Disclosed58/100Disclosure Gaps
9Rank57/100Disclosure Gaps9RankOFSoft chew57/100Disclosure GapsOpen Farm Skin & Coat Chews are a strong omega-forward chew with unusually good sourcing transparency. The formula uses fish oil, wild Alaskan salmon oil, cod liver oil, sunflower lecithin, blueberries, kelp, vitamin C, vitamin E, and biotin, with DHA, EPA, vitamin E, and biotin shown on the label. The catch: it does not include collagen, hyaluronic acid, ceramides, or an amino-acid lane for dermal structure.
Best forOwners who value sourcing transparency and want a dog-only omega chew for skin and coat support.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Fish oil, wild Alaskan salmon oil, cod liver oil, sunflower lecithin, dried blueberries, dried kelp, vitamin C, vitamin E, and biotin.
- DHA, EPA, vitamin E, and biotin are disclosed on the label, though EPA and DHA are shown as percentages rather than direct milligrams.
- NASC Quality Seal support, Certified B Corporation status, and lot-code ingredient-origin lookup.
What's not in it
- Collagen, gelatin, hyaluronic acid, ceramides, or named amino acids.
- Direct EPA and DHA milligrams per chew.
- A per-active potency COA or named third-party lab for the finished chew.
Label snapshotEPA/DHA disclosed as % not mg · no collagen or HA laneFish oil, wild Alaskan salmon oil, cod liver oil (DHA 1.15% min, EPA 0.8% min per chew), sunflower lecithin, dried blueberries, dried kelp, vitamin C, vitamin E 32 IU, biotin 10 mcg?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe Open Farm brand product page publishes the full ingredient list with no proprietary blend and a per-chew guaranteed analysis that names DHA at 1.15% minimum, EPA at 0.8% minimum, vitamin E at 32 IU minimum, and biotin at 10 mcg minimum, alongside total omega-3, omega-6, and omega-9 percentages.Fish oil, wild Alaskan salmon oil, and cod liver oil are not individually disclosed as discrete milligrams per chew, vitamin C and dried kelp are not quantified, and EPA/DHA remain stated as percentages rather than as direct milligram…Crude Fat (min) 21%, Moisture (max) 10%, Docosahexaenoic Acid (DHA) (min) 1.15%, Eicosapentaenoic Acid (EPA) (min) 0.8%, Vitamin E (min) 32 IU, Total Omega 3 (min) 2%, Total Omega 6 Fatty Acids (min) 6.25%, Total Omega 9 Fatty Acids (min) 2.25%, Biotin (min) 10 mcg.The formula maps cleanly to barrier-lipid and antioxidant logic and lightly to keratin support.Hydration, dermal matrix, and a dedicated nail or follicle lane are missing. Adding a disclosed hyaluronic-acid or ceramide ingredient and a collagen, gelatin, or amino-acid component would lift from tier 4 toward tier 7 to 9.Oat Flour, Dried Sweet Potato, Sunflower Lecithin, Dried Blueberries, Water, Vegetable Glycerin, Dried Kelp, Fish Oil, Wild-Alaskan Salmon Oil, Organic Honey, Cod Liver Oil, Coconut Oil, Calcium Ascorbate (Vitamin C), D-a-tocopherol (Vitamin E), Natural Flavor (yeast), Biotin.Barrier-lipid logic is the strongest layer of this formula. Three marine and fish-derived lipid sources contribute to the barrier story — fish oil, wild Alaskan salmon oil (Ocean Wise recommended), and cod liver oil — and DHA at 1.15% minimum with EPA at 0.8% minimum is a meaningfully higher DHA-relative weighting than is typical of the soft-chew omega category.No hyaluronic acid, ceramide, or other hydration ingredient is included. Adding a disclosed hydration active and converting EPA and DHA to milligrams per chew with per-lipid-source mg disclosure would lift from tier 7 toward tier 9 to 10.Oat Flour, Dried Sweet Potato, Sunflower Lecithin, Dried Blueberries, Water, Vegetable Glycerin, Dried Kelp, Fish Oil, Wild-Alaskan Salmon Oil, Organic Honey, Cod Liver Oil, Coconut Oil, Calcium Ascorbate (Vitamin C), D-a-tocopherol (Vitamin E), Natural Flavor (yeast), Biotin.The Open Farm Skin & Coat chew contains no collagen peptides, no gelatin, no marine collagen, no hydrolyzed protein, and no free-amino-acid lane mapped to dermal matrix support. Oat flour and dried sweet potato appear high in the ingredient list, but these are carbohydrate chew-base carriers and are not positioned or dosed as structural-protein actives.No structural-support ingredient appears in the formula. Adding disclosed collagen peptides, gelatin, marine collagen, or a hydrolyzed-protein lane with milligram disclosure would lift from tier 1 toward tier 7 to 10.Oat Flour, Dried Sweet Potato, Sunflower Lecithin, Dried Blueberries, Water, Vegetable Glycerin, Dried Kelp, Fish Oil, Wild-Alaskan Salmon Oil, Organic Honey, Cod Liver Oil, Coconut Oil, Calcium Ascorbate (Vitamin C), D-a-tocopherol (Vitamin E), Natural Flavor (yeast), Biotin.The formula does include two keratin-relevant nutrients with per-chew quantification: biotin at 10 mcg minimum per chew (notably higher per chew than several category peers) and dried kelp, which contributes trace minerals including iodine.Zinc is not in the per-chew guaranteed analysis and silica, MSM, cysteine, or other amino-acid building blocks for keratin formation are missing.Biotin (min) 10 mcg.Open Farm operates one of the most developed transparency programs in the category. The brand publishes a lot-code traceability tool that lets buyers connect a specific bag or container to ingredient-level origins and supplier certifications including Ocean Wise, MSC, ASC, Certified Humane, Global Animal Partnership, and Animal Welfare Certified.The lot-code tool surfaces ingredient origin and pathogen-safety logic rather than a per-active potency Certificate of Analysis, and no third-party contract laboratory is named by brand on the public surfaces for this SKU.Trace the source of every ingredient in every bag instantly by scanning the lot code on the bag.Claim language on the brand surface is unusually disciplined for the category. The Skin & Coat chew is positioned around supporting a 'soft and shiny coat,' antioxidant support, and omega-3 fatty acid contribution from fish oil, wild Alaskan salmon oil, and cod liver oil rather than around disease treatment.No finished-formula peer-reviewed canine trial is referenced, and downstream retail surfaces extend the 'vet-approved' framing without further qualification.These tasty soft chews are specifically formulated to provide extra support for their skin and coat, with vet-recommended functional ingredients like cod liver and Wild Alaskan Salmon oil that are rich in omega-3 fatty acids, EPA, and DHA, while dried blueberries are rich in antioxidants and manganese.Daily-use design is strong. The format is a 4-gram soft chew at 22 kcal each, eliminating pill-administration friction and supporting daily palatability with oat-flour, sweet-potato, blueberry, and natural-flavor (yeast) framing.Only a 90-count container is offered (no larger packs for multi-dog or large-dog households) and no statistically meaningful per-SKU customer rating is surfaced on the brand or specialty-retailer surfaces reviewed.Up to 25 lbs: 1 soft chew daily; 26-75 lbs: 2 soft chews daily; Over 75 lbs: 3 soft chews daily. Start with half the recommended amount for one week.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →9OFOpen Farm · Soft chewOpen Farm Skin & Coat Chews are a strong omega-forward chew with unusually good sourcing transparency. The formula uses fish oil, wild Alaskan salmon oil, cod liver oil, sunflow...NASC Quality SealEvery Dose DisclosedMade In USA57/100Disclosure Gaps
10Rank56.2/100Disclosure Gaps10RankNVSoft chew56.2/100Disclosure GapsNaturVet Skin & Coat Soft Chews are a basic omega-and-vitamin chew with clear label amounts. Per two chews, the label shows omega-3 200 mg, omega-6 50 mg, vitamin C 25 mg, vitamin E 10 IU, zinc 2 mg, and biotin 2 mcg. The catch: this is not the same as NaturVet Beauty Targeted Care, and it does not include collagen, hyaluronic acid, ceramides, or a structural skin-support lane.
Best forOwners who want an affordable, mainstream omega-and-vitamin chew for general coat support.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Omega-3, omega-6, vitamin C, vitamin E, zinc, and biotin with disclosed amounts per two-chew serving.
- Flaxseed, salmon oil, and fish oil as the lipid sources.
- NASC-backed manufacturing through NaturVet and Garmon Corp in Temecula, California.
What's not in it
- Collagen, gelatin, hyaluronic acid, ceramides, amino acids, silica, or MSM.
- Separate EPA and DHA milligram amounts.
- A low-chew routine for large dogs, especially during the two-week loading period.
Label snapshotSingle-purpose omega + vitamin chew, no collagen or HA laneALA 200 mg + LA 50 mg + Vit C 25 mg + Vit E 10 IU + Zinc 2 mg + Biotin 2 mcg per 2 chews?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsPer-serving active doses are fully enumerated on the brand product page for every meaningful active. Alpha-Linolenic Acid (Omega-3) 200 mg, Linoleic Acid (Omega-6) 50 mg, Calcium Ascorbate (Vitamin C) 25 mg, Vitamin E 10 IU, Zinc 2 mg, and Biotin 0.002 mg are each disclosed at the per-2-soft-chew level. Inactive ingredients are enumerated by identity.Doses are disclosed per 2-chew serving rather than per individual chew, which is a minor friction for buyers comparing across SKUs at the per-chew level.Active Ingredients per 2 soft chews: alpha-Linolenic Acid (Omega-3): 200 mg; Linoleic Acid (Omega-6): 50 mg; Calcium Ascorbate (Vitamin C): 25 mg; Vitamin E: 10 IU; Zinc: 2 mg; Biotin: 0.002 mg.The formula maps cleanly to barrier-lipid and antioxidant logic and lightly to keratin support, but it does not span the integumentary system in the way the rubric scores. Alpha-linolenic acid 200 mg and linoleic acid 50 mg cover the omega-3 and omega-6 fatty acid lanes; flaxseed, salmon oil, and fish oil in the inactive matrix add additional ALA, EPA, and DHA exposure.Hydration, dermal matrix, and a dedicated nail or follicle lane are missing.NaturVet Skin & Coat Soft Chews for Dogs helps support healthy skin and a glossy coat. The product contains Omega-3, Omega-6, and Biotin.Barrier-lipid logic is the strongest layer of this formula. Three lipid sources contribute to the omega story — flaxseed, salmon oil, and fish oil — and alpha-linolenic acid is disclosed at 200 mg per 2 chews with linoleic acid at 50 mg per 2 chews, giving a multi-source omega-3 and omega-6 stack.No hyaluronic acid, ceramide, or other hydration ingredient is included. EPA and DHA are not separately disclosed as milligrams even though salmon oil and fish oil are present in the matrix.Active Ingredients per 2 soft chews: alpha-Linolenic Acid (Omega-3): 200 mg; Linoleic Acid (Omega-6): 50 mg... Inactive Ingredients: Flaxseed, Dried Potato Product, Glycerin, Brewers Dried Yeast, Lecithin, Salmon Oil, Water, Maltodextrin, Natural Flavoring, Parsley Leaf, Tapioca Starch, Fish Oil...The Skin & Coat Soft Chew formula contains no collagen peptides, no gelatin, no marine collagen, no hydrolyzed protein, and no free-amino-acid lane mapped to dermal matrix support. Dried potato product, brewers dried yeast, tapioca starch, and maltodextrin appear in the inactive matrix, but these are chew-base carriers and humectants rather than structural-protein actives.No structural-support ingredient appears in the formula. Adding disclosed collagen peptides, gelatin, marine collagen, or a hydrolyzed-protein lane with milligram disclosure would lift from tier 1 toward tier 7-10.Inactive Ingredients: Flaxseed, Dried Potato Product, Glycerin, Brewers Dried Yeast, Lecithin, Salmon Oil, Water, Maltodextrin, Natural Flavoring, Parsley Leaf, Tapioca Starch, Fish Oil, Sorbic Acid (preservative), Mixed Tocopherols (preservative), Vegetable Oil, Zinc Sulfate, Citric Acid (preservative).The formula includes two keratin-relevant nutrients at disclosed doses: zinc at 2 mg per 2 chews and biotin at 0.002 mg (2 mcg) per 2 chews. Both are categorically appropriate for skin and coat formulas.Biotin at 2 mcg per 2-chew serving is light, and silica, MSM, or amino-acid building blocks for keratin formation are missing. Nails are not named as a marketed outcome.Active Ingredients per 2 soft chews:... Zinc: 2 mg; Biotin: 0.002 mg.Quality program signals are stronger than category median but stop short of public per-lot finished-product verification. NaturVet carries the NASC Quality Seal as a founding preferred supplier and is manufactured by Garmon Corp, which holds NASC Preferred Supplier status through 2027-09-15 with annual recertification required.UL audits the facility, not a per-batch finished-product spec.FDA-registered & audited; Compliant with cGMP's highest industry standards; Third-party audited by UL; NASC founding member.Claim register is disciplined and species-appropriate. The product is positioned as a dog-only supplement for dogs over 12 weeks of age.No finished-formula clinical study on the Skin & Coat Soft Chew SKU is cited. Evidence rests on category-level omega-3, omega-6, biotin, and zinc reasoning rather than product-specific data.NaturVet Skin & Coat Soft Chews for Dogs helps support healthy skin and a glossy coat.Format is a soft chew, which is the highest-acceptance format in the category and bypasses pill refusal. Weight-banded dosing covers the full canine size range from under 25 lbs through 76-plus lbs in four steps.Daily chew counts scale aggressively at the higher weight bands, and the two-week loading instruction doubles consumption further.Suggested Daily Dose: Up to 25 lbs - 1-2 chews daily; 26-50 lbs - 3-4 chews daily; 51-75 lbs - 5-6 chews daily; 76+ lbs - 7-8 chews daily. Double daily amount for first two weeks.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing ↗Read comparison →10NVNaturVet (a Garmon Corp brand) · Soft chewNaturVet Skin & Coat Soft Chews are a basic omega-and-vitamin chew with clear label amounts. Per two chews, the label shows omega-3 200 mg, omega-6 50 mg, vitamin C 25 mg, vitam...NASC Quality SealEvery Dose DisclosedMade In USA56.2/100Disclosure Gaps
11Rank56/100Disclosure Gaps11RankWLLiquidWelactin Advanced 3TA Omega-3 Liquid for Dogs
Welactin (a Nutramax Laboratories brand) · Liquid
Related BenchmarkLiquid56/100Disclosure GapsWelactin Advanced 3TA is a vet-channel omega product with very clear EPA, DHA, and ETA amounts. Each 2 mL scoop provides total omega-3 975 mg, EPA 530 mg, DHA 350 mg, and ETA 10 mg. The catch: it is a lipid product, not a complete skin-and-coat system, so it does not include collagen, hyaluronic acid, ceramides, biotin, zinc, silica, or MSM.
Best forOwners who want a veterinarian-channel omega-3 liquid and do not need structural or nail-support nutrients in the same product.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- EPA, DHA, and ETA with milligram amounts clearly shown per 2 mL scoop.
- Fish oil with green-lipped mussel-derived marine lipid, plus mixed tocopherols, rosemary, and green tea extract for oil stability.
- Nutramax veterinary-channel positioning and parent-company quality-check language.
What's not in it
- Collagen, gelatin, hyaluronic acid, ceramides, biotin, zinc, silica, or sulfur donors.
- A public lot-level COA, named independent lab, or buyer-facing batch lookup.
- A flavored chew format for dogs who resist liquid oil over food.
Label snapshotSingle-lane omega benchmark · no HA, no collagen, no keratin laneEPA 530 mg, DHA 350 mg, ETA 10 mg, Total Omega-3 975 mg per 2 mL scoop?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsDose disclosure on Advanced 3TA is unusually complete for the omega-lane category. Per 2 mL scoop the brand publishes Total Omega-3 at 975 mg, EPA at 530 mg, DHA at 350 mg, and ETA at 10 mg, all in milligrams rather than percentages, which is the format buyers can directly benchmark against other omega-3 supplements.Carrier and preservative components (vegetable oil, mixed tocopherols, rosemary, green tea extract) are not disclosed at individual milligram levels, and the green-lipped mussel-derived lipid that supplies ETA is not separately quantified…Per 2 mL scoop: Total Omega-3 975 mg; EPA 530 mg; DHA 350 mg; ETA 10 mg.Coverage is concentrated on a single integumentary domain: skin barrier lipids. The omega-3 stack of EPA, DHA, and ETA contributes credibly to the barrier-lipid layer, and the mixed tocopherols add a light antioxidant role within that same lipid story.Hydration, dermal matrix, keratin and nail nutrients, and follicle-support ingredients are all absent.Welactin Advanced 3TA Omega-3 Supplement provides concentrated levels of the long-chain omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), plus guaranteed levels of a third beneficial long-chain omega-3 fatty acid, eicosatetraenoic acid (ETA).Barrier-lipid logic is the strongest dimension of this formula and the reason it serves as the omega-lane benchmark. The lipid stack delivers EPA at 530 mg and DHA at 350 mg per 2 mL scoop in ethyl-ester form, with an additional ETA contribution from green-lipped mussel-derived marine lipid.No hyaluronic acid, ceramide, or other hydration ingredient is present. Adding a disclosed hydration active alongside the existing lipid stack would lift this from tier 8 toward tier 9 to 10.Welactin Advanced 3TA Omega-3 Supplement provides concentrated levels of the long-chain omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), plus guaranteed levels of a third beneficial long-chain omega-3 fatty acid, eicosatetraenoic acid (ETA). ETA is a unique long chain omega-3 fatty acid found in marine lipid sources and is a component of Perna canaliculus, or green-lipped mussel.Advanced 3TA contains no collagen peptides, no gelatin, no marine collagen, no hydrolyzed protein, and no free-amino-acid lane mapped to dermal matrix support.No structural-support ingredient appears in the formula.Fish oil with vegetable oil, mixed tocopherols, rosemary, and green tea extract as preservatives.The formula does not include biotin, zinc, silica, sulfur donors such as MSM or cysteine, or any amino-acid building blocks relevant to keratin formation, follicle support, or nail quality. The retailer-disclosed ingredient context — fish oil, vegetable oil, mixed tocopherols, rosemary, green tea extract — covers a lipid-delivery and preservative function only.No keratin- or nail-relevant nutrient is present.Fish oil with vegetable oil, mixed tocopherols, rosemary, and green tea extract as preservatives.Testing transparency rests on parent-company credibility rather than on lot-level documentation.No public lot-level Certificate of Analysis program, no named third-party contract laboratory, no NASC Quality Seal displayed on the Advanced 3TA brand PDP, and no buyer-accessible batch-lookup tool.Welactin Advanced 3TA is brought to you by Nutramax Laboratories Veterinary Sciences, Inc., the #1 Veterinarian Recommended Supplement Company, with every batch undergoing thorough quality inspections.Claim discipline on the brand and trade surfaces is generally responsible for a vet-channel product. Benefit language is framed around 'support' for skin and coat, joint, immune, heart, kidney, brain, and vision — not around treatment or cure of any diagnosed dermatological condition.No finished-formula peer-reviewed canine trial on Advanced 3TA is referenced on the public surfaces, and the multi-system benefit framing rests on category-level omega-3 reasoning rather than product-specific data.Welactin Advanced 3TA Omega-3 Supplement is concentrated fish oil that supports overall wellness for dogs of all ages through the benefits of the long-chain omega-3 fatty acids ETA, EPA, and DHA. In addition to supporting skin and coat health, omega 3s help support joint, immune system, heart, kidney, brain, and vision health.Daily-use design has clear strengths and clear friction. On the strength side, the brand publishes a 14-row dog-weight dosing chart from 1/4 scoop for 4-7 lb dogs to 3.5 scoops for 109-118 lb dogs, with a parallel Joint Health column that doubles the dose, and the product ships with an included 2 mL measuring scoop, which removes guesswork for owners.Liquid-poured-over-food format introduces palatability variability vs. flavored chews, refrigerated handling adds friction, and no customer ratings or palatability reviews are surfaced on the brand PDP.Dosing chart: 4-7 lb 1/4 scoop; 8-13 lb 1/2 scoop; 14-20 lb 3/4 scoop; 21-26 lb 1 scoop; 27-34 lb 1 1/4 scoops; 35-42 lb 1 1/2 scoops; 43-50 lb 1 3/4 scoops; 51-59 lb 2 scoops; 60-67 lb 2 1/4 scoops; 68-77 lb 2 1/2 scoops; 78-87 lb 2 3/4 scoops; 88-97 lb 3 scoops; 98-108 lb 3 1/4 scoops; 109-118 lb 3 1/2 scoops.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →11WLWelactin (a Nutramax Laboratories brand) · LiquidWelactin Advanced 3TA is a vet-channel omega product with very clear EPA, DHA, and ETA amounts. Each 2 mL scoop provides total omega-3 975 mg, EPA 530 mg, DHA 350 mg, and ETA 10...Every Dose DisclosedMade In USA56/100Disclosure Gaps- 12VQVetoquinol · Liquid (oil)Vetoquinol Triglyceride Omega is a fish-oil liquid for dogs and cats with a clear per-pump label: 1000 mg fish oil supplying EPA 180 mg and DHA 120 mg, plus vitamins A, D3, and ...NASC Quality SealEvery Dose Disclosed55.0/100Disclosure Gaps
13Rank54.8/100Disclosure Gaps13RankPHLiquid (oil)54.8/100Disclosure GapsPet Honesty Skin & Coat Health Oil is a food-topper oil built around salmon oil, flaxseed oil, turkey bone broth, biotin, vitamin E, and zinc glycinate. It is easy to use because the dosing is one teaspoon per 10 lb of body weight, mixed into food. The catch: the product does not show EPA, DHA, biotin, zinc, or vitamin E milligrams per teaspoon, and it does not include collagen peptides, hyaluronic acid, ceramides, silica, or MSM.
Best forOwners who want a liquid oil topper for skin and coat support and do not require exact EPA/DHA disclosure.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingDose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Salmon oil, flaxseed oil, turkey bone broth, biotin, vitamin E, zinc glycinate, and mixed tocopherols.
- A pump or pour-style liquid topper designed to mix into daily meals.
- NASC membership and USA GMP manufacturing claims at the brand level.
What's not in it
- EPA, DHA, biotin, zinc, or vitamin E amounts per teaspoon.
- Isolated collagen peptides, hyaluronic acid, ceramides, silica, or MSM.
- A public lot-level COA, named independent lab, or buyer-facing batch lookup.
Label snapshotSalmon-oil-led · EPA/DHA mg not disclosed per tsp · no HA or isolated collagen peptideSalmon oil, flaxseed oil, turkey bone broth, biotin, vitamin E, zinc glycinate (no per-tsp mg disclosed)?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe Pet Honesty brand product page enumerates the full ingredient list by identity but does not publish per-teaspoon milligram amounts for the meaningful actives, and does not surface a guaranteed analysis panel on the brand surface itself.No per-teaspoon milligrams for EPA, DHA, biotin, zinc, or vitamin E are disclosed on the brand PDP or retailer surfaces.Guaranteed Analysis: Crude Protein 5%, Crude Fat 5%, Crude Fiber (Max) 3%, Moisture (Max) 50%.The formula maps cleanly to barrier-lipid logic and lightly to antioxidant and keratin support. Salmon oil and flaxseed oil cover EPA, DHA, and ALA contributions toward the lipid layer; vitamin E and mixed tocopherols contribute antioxidant protection; zinc glycinate and biotin touch keratin-relevant nutrition.Hydration, dermal matrix, and a dedicated nail or follicle lane are missing. Adding a disclosed hyaluronic-acid or ceramide ingredient and a quantified collagen peptide or amino-acid component would lift from tier 4 toward tier 7 to 9.Maintains skin moisture & health. Helps protect skin & supports skin health. Benefits skin, joints, brain, heart, & overall health.Barrier-lipid logic is the strongest layer of this formula. Two lipid sources contribute to the barrier story — salmon oil and flaxseed oil — delivering EPA, DHA, and ALA contributions in a liquid format that scales by body weight at one teaspoon per 10 lbs daily.No hyaluronic acid, ceramide, or other hydration ingredient is included, and EPA and DHA are not disclosed in milligrams per teaspoon.Made with powerful key ingredients including biotin, vitamin E, omega-3s, & more.The formula uses turkey bone broth as the base liquid and frames it on the brand PDP as collagen-rich and protein-providing, with dried egg product and brewer's yeast adding incremental amino-acid contribution. That gives the product a partial structural-support story by category convention.No isolated collagen peptide, hydrolyzed protein, or amino-acid lane is disclosed at a meaningful dose. Adding a quantified collagen peptide or hydrolyzed-protein ingredient on the brand PDP would lift from tier 4 toward tier 8 to 10.Collagen-rich bone broth provides a protein boost.The formula does include two keratin-relevant nutrients — zinc glycinate and biotin — and brewer's yeast contributes incremental B-vitamin and trace-mineral nutrition relevant to coat renewal. Both zinc and biotin are categorically appropriate for skin and coat formulas.Biotin and zinc are listed but not quantified per teaspoon, and silica, sulfur donors, or amino-acid building blocks for keratin formation are missing.Zinc, Vitamin E, Biotin (Vitamin H), Omega-3s (from Fish Oil & Flaxseed Oil)Pet Honesty is a National Animal Supplement Council Primary Supplier member, listed on the public NASC directory at nasc.cc, and brand surfaces reference NASC membership and the Quality Seal. NASC membership requires passing an independent facility audit and meeting ongoing program standards, which constitutes credible third-party process oversight at the company level.No public lot-level Certificate of Analysis program, no named third-party contract laboratory, and no buyer-accessible batch-lookup tool.This Primary Supplier has been personally interviewed by NASC to ensure they understand membership requirements, as well as the quality standards they must uphold.Claim language on the brand PDP is generally disciplined for the category. Skin moisture, skin protection, and skin and coat support are positioned around biotin, vitamin E, and omega-3 fatty acids rather than around disease treatment. The brand PDP avoids explicit allergy-treatment or atopic-dermatitis-treatment language on the surfaces reviewed.No finished-formula peer-reviewed canine trial is referenced, and adjacent SKUs in the same family use itch-relief framing that bleeds into the broader product context.Pet Honesty's Skin + Coat Health + Salmon Oil is nutritionist approved to zap the dull, drab coat that keeps your pup from feeling selfie ready & comfy in their skin.Daily-use design is a strong feature of this format. The product is a 12 fl oz liquid food topper in a twist-cap bottle, eliminating pill-administration friction and supporting straightforward daily mixing into food.Refrigeration, post-opening shelf life, and split AM/PM dosing guidance are not addressed on the brand PDP, and the 12 fl oz bottle gives roughly one month of supply for a mid-size dog.Give one teaspoon daily per 10lbs of weight. X-Small 1-10 lbs 1 tsp; Small 11-20 lbs 2 tsp; Medium 21-30 lbs 3 tsp; Large 31-40 lbs 4 tsp; X-Large 41-50+ lbs 5+ tsp.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →13PHPet Honesty · Liquid (oil)Pet Honesty Skin & Coat Health Oil is a food-topper oil built around salmon oil, flaxseed oil, turkey bone broth, biotin, vitamin E, and zinc glycinate. It is easy to use becaus...NASC Quality SealMade In USADose Disclosure Limited54.8/100Disclosure Gaps- 14FPFera Pet Organics · Liquid (oil)Fera Pets Fish Oil is a liquid topper for dogs and cats built around wild-caught fish oil, disclosed EPA and DHA, and sunflower-derived vitamin E. It is one of the clearer omega...NASC Quality SealPublic Lab AccessMade In USADose Disclosure Limited52.8/100Disclosure Gaps
15Rank51.2/100Disclosure Gaps15RankNVBiscuit51.2/100Disclosure GapsNutri-Vet Skin & Coat Biscuits are a crunchy treat-style option built around oils, egg product, antioxidant vitamins, zinc, and biotin. The formula names flaxseed, krill meal, salmon oil, flaxseed oil, marine microalgae oil, vitamin C, vitamin E, zinc proteinate, and biotin. The catch: no per-biscuit active amounts are shown, and the product does not include collagen, hyaluronic acid, ceramides, or a structural skin lane.
Best forOwners who want a crunchy skin-and-coat treat rather than a powder, oil, or soft chew.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingLow-Dose Concern
Some active ingredients appear to be present at levels that may be difficult to interpret as meaningful daily support based on public label information.
Dose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Flaxseed, krill meal, salmon oil, flaxseed oil, marine microalgae oil, egg product, vitamin C, vitamin E, zinc proteinate, and biotin.
- A chicken-and-salmon crunchy biscuit format with small-dog dosing guidance.
- NASC Quality Seal support and made-in-USA positioning.
What's not in it
- Public per-biscuit milligram amounts for the listed actives.
- Collagen, gelatin, hydrolyzed protein, hyaluronic acid, ceramides, or amino acids.
- A public lot-level COA, named independent lab, or buyer-facing batch lookup.
Label snapshotMulti-oil lipid stack + antioxidants · no collagen, HA, or amino-acid laneFlaxseed, krill meal, salmon oil, flaxseed oil, marine microalgae oil, egg product, vitamin C, vitamin E, zinc proteinate, biotin (no per-biscuit mg disclosed)?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe Nutri-Vet brand product page lists the full ingredient identity for the Skin & Coat Functional Biscuits but does not publish per-biscuit milligram amounts for any active ingredient. Flaxseed, krill meal, salmon oil, flaxseed oil, marine microalgae oil, egg product, vitamin C, vitamin E, zinc proteinate, and biotin all appear by name without dose figures.No per-biscuit milligram disclosure is published for flaxseed, krill meal, salmon oil, marine microalgae oil, vitamin C, vitamin E, zinc proteinate, or biotin, and no guaranteed-analysis panel is surfaced on the brand PDP.Oat Flour, Sweet Potato Flour, Chicken Meal, Cane Molasses, Flaxseed, Krill Meal, Chicken Fat (preserved with Mixed Tocopherols), Flaxseed Oil, Carrot Powder, Salmon Oil, Egg Product, Hydrolyzed Yeast, Corn Distillers Dried Grains With Solubles, Marine Microalgae Oil, Dried Citrus Meal, Vitamin C (Ascorbyl-2-Polyphosphate), Vitamin E (A-Tocopherol Acetate), Citric Acid (preservative), Mixed Tocopherols (preservative), Zinc Proteinate, Vitamin B7 (Biotin), Rosemary Extract.Coverage is broader than a single-oil omega chew but still concentrated on lipid and antioxidant logic. Flaxseed, krill meal, salmon oil, flaxseed oil, and marine microalgae oil contribute ALA, EPA, and DHA toward the skin barrier lipid layer. Vitamin C and vitamin E provide antioxidant coverage. Zinc proteinate and biotin touch keratin-relevant nutrition.Hydration, dermal matrix, and a dedicated nail or follicle lane are missing.Biotin, zinc, and antioxidant vitamins C & E...support healthy skin, while omega-3 fatty acids from fish oil and plantBarrier-lipid logic is the strongest layer of the formula and is built on five named lipid sources: flaxseed and flaxseed oil for plant-derived ALA, krill meal for phospholipid-bound EPA and DHA, salmon oil for triglyceride-form EPA and DHA, and marine microalgae oil for algae-derived DHA.No hyaluronic acid, ceramide, or other hydration ingredient is included, and EPA, DHA, and total omega-3 are not disclosed in milligrams per biscuit.Oat Flour, Sweet Potato Flour, Chicken Meal, Cane Molasses, Flaxseed, Krill Meal, Chicken Fat (preserved with Mixed Tocopherols), Flaxseed Oil, Carrot Powder, Salmon Oil, Egg Product, Hydrolyzed Yeast, Corn Distillers Dried Grains With Solubles, Marine Microalgae Oil, Dried Citrus Meal, Vitamin C (Ascorbyl-2-Polyphosphate), Vitamin E (A-Tocopherol Acetate), Citric Acid (preservative), Mixed Tocopherols (preservative), Zinc Proteinate, Vitamin B7 (Biotin), Rosemary Extract.The Skin & Coat Functional Biscuits formula contains no collagen peptides, no gelatin, no marine collagen, no hydrolyzed protein, and no free-amino-acid ingredient positioned as a structural-protein active.No structural-support ingredient appears in the formula. Adding disclosed collagen peptides, gelatin, marine collagen, or a hydrolyzed-protein lane with milligram disclosure would lift from tier 1 toward tier 7 to 10.Oat Flour, Sweet Potato Flour, Chicken Meal, Cane Molasses, Flaxseed, Krill Meal, Chicken Fat (preserved with Mixed Tocopherols), Flaxseed Oil, Carrot Powder, Salmon Oil, Egg Product, Hydrolyzed Yeast, Corn Distillers Dried Grains With Solubles, Marine Microalgae Oil, Dried Citrus Meal, Vitamin C (Ascorbyl-2-Polyphosphate), Vitamin E (A-Tocopherol Acetate), Citric Acid (preservative), Mixed Tocopherols (preservative), Zinc Proteinate, Vitamin B7 (Biotin), Rosemary Extract.The formula includes the two ingredients the rubric most often credits in this criterion: zinc proteinate and biotin (Vitamin B7), both named on the brand PDP. Egg product contributes additional biotin and sulfur-amino-acid context, which is more than most single-oil chews offer.Biotin and zinc are named but not dose-disclosed, and silica, MSM, or sulfur-donor amino-acid ingredients are missing.Zinc Proteinate, Vitamin B7 (Biotin)Nutri-Vet is a National Animal Supplement Council Primary Supplier, listed on the public NASC directory at nasc.cc, and the brand displays the NASC Quality Seal on the Skin & Coat Functional Biscuits product page. NASC states the company has passed a rigorous independent audit of its facilities, which constitutes credible third-party process oversight at the company level.No public lot-level Certificate of Analysis program, no named third-party contract laboratory, and no buyer-accessible batch-lookup tool.This Primary Supplier has passed a rigorous independent audit of their facilities, earning authorization to display the NASC Quality Seal.Claim language on the brand PDP is disciplined for the category. Skin and coat support is positioned around omega-3 fatty acids, biotin, zinc, and antioxidant vitamins rather than around disease treatment, and the FAQ block explicitly states the product is not intended to cure, reverse, or prevent any condition.No finished-formula peer-reviewed canine trial is referenced, and the 'Amounts That Count' framing is not paired with disclosed per-biscuit milligram values.Not intended to cure, reverse, or prevent any condition.Daily-use design is workable but format-limited. The product is a chicken and salmon flavored crunchy biscuit, which avoids pill-administration friction and supports treat-style daily delivery, and the FAQ block provides scaled-down guidance for small dogs at half a biscuit for a 10 lb dog and approximately 3.5 grams (about a quarter biscuit) for dogs under 5 lbs.The full weight-banded feeding chart is not surfaced on the brand PDP, pack size is limited to a single 16 oz bag, and the crunchy biscuit format limits split-dose flexibility relative to soft chews.½ of a biscuit for a 10 lb dogLast reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →15NVNutri-Vet · BiscuitNutri-Vet Skin & Coat Biscuits are a crunchy treat-style option built around oils, egg product, antioxidant vitamins, zinc, and biotin. The formula names flaxseed, krill meal, s...NASC Quality SealMade In USALow-Dose ConcernDose Disclosure Limited51.2/100Disclosure Gaps
16Rank50.6/100Disclosure Gaps16RankPLPork-flavored soft chew50.6/100Disclosure GapsPetLab Co. Skin & Coat Chews are omega-led soft chews with turmeric, apple cider vinegar, and vitamin E added to the formula. The active panel shows total omegas 225 mg, EPA 85 mg, DHA 57 mg, ALA 55 mg, turmeric 100 mg, apple cider vinegar 50 mg, and vitamin E 20 mg per chew. The catch: biotin, zinc, and vitamin C are discussed in marketing, but they are not shown with per-chew amounts on the active panel.
Best forOwners who want an omega-forward soft chew with disclosed EPA and DHA amounts and broad retail availability.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingDose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Anchovy oil, flaxseed oil, turmeric, apple cider vinegar, and vitamin E with active amounts disclosed.
- EPA, DHA, ALA, and total omegas shown in milligrams per chew.
- NASC membership, USA manufacturing language, and broad retail access.
What's not in it
- Dose-disclosed biotin, zinc, or vitamin C on the active panel.
- Collagen, gelatin, hyaluronic acid, ceramides, or an amino-acid lane.
- A public lot-level COA, named independent lab, or buyer-facing batch lookup.
Label snapshot5 actives disclosed · biotin in copy only · chewTotal Omega Fatty Acids 225 mg/chew (EPA 85 mg, DHA 57 mg, ALA 55 mg), Turmeric 100 mg, Apple Cider Vinegar 50 mg, Vitamin E 20 mg?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe PetLab Co. brand PDP discloses per-chew milligrams for a partial active stack: Total Omega Fatty Acids 225 mg with EPA 85 mg, DHA 57 mg, and ALA 55 mg broken out, plus Turmeric 100 mg, Apple Cider Vinegar 50 mg, and Vitamin E 20 mg. That level of breakdown is meaningfully better than the omega-percentage-only disclosure used by several skin-and-coat soft-chew peers.Biotin, zinc gluconate, and vitamin C are described in brand marketing and education copy as supporting actives for skin discomfort but do not appear with per-chew milligram disclosure on the active-ingredients panel.Total Omega Fatty Acids (3, 6 & 9): 225 mg; EPA (from Anchovy & Flaxseed Oil): 85 mg; DHA: 57 mg; ALA: 55 mg; Turmeric (Curcuma longa): 100 mg; Apple Cider Vinegar: 50 mg; Vitamin E (d-a-Tocopherol Acetate): 20 mg.The disclosed formula maps to barrier-lipid logic and an antioxidant and inflammation-adjacent botanical layer. Anchovy oil and flaxseed oil contribute EPA, DHA, and ALA toward the lipid layer; turmeric and apple cider vinegar add antioxidant and immune-adjacent botanical positioning; vitamin E provides antioxidant cover for the lipid stack itself.Hydration, dermal matrix, structural-protein, and a dedicated nail or follicle lane are missing from the disclosed panel.Total Omega Fatty Acids (3, 6 & 9): 225 mg; EPA (from Anchovy & Flaxseed Oil): 85 mg; DHA: 57 mg; ALA: 55 mg; Turmeric (Curcuma longa): 100 mg; Apple Cider Vinegar: 50 mg; Vitamin E (d-a-Tocopherol Acetate): 20 mg.Barrier-lipid logic is the strongest disclosed layer of this formula. Two lipid sources contribute to the barrier story — anchovy oil and flaxseed oil — and the panel discloses Total Omega Fatty Acids 225 mg per chew with EPA 85 mg, DHA 57 mg, and ALA 55 mg broken out individually.No hyaluronic acid, ceramide, or other hydration ingredient is included. Adding a disclosed hydration active alongside the existing lipid-and-vitamin-E architecture would lift from tier 7 toward tier 9 to 10.Total Omega Fatty Acids (3, 6 & 9): 225 mg; EPA (from Anchovy & Flaxseed Oil): 85 mg; DHA: 57 mg; ALA: 55 mg; Vitamin E (d-a-Tocopherol Acetate): 20 mg.The PetLab Co. Skin & Coat Chews formula contains no collagen peptides, no gelatin used as a structural-protein active, no marine collagen, no hydrolyzed protein, and no free-amino-acid lane mapped to dermal matrix support.No structural-support ingredient appears in the active-ingredients panel.Coconut Glycerin, Dried Brewer's Yeast, Dried Whey, Hickory Smoke Flavor, Honey, Lecithin, Mixed Tocopherols, Molasses, Pork Gelatin, Pork Liver, Tapioca Starch.The disclosed active-ingredients panel for PetLab Co. Skin & Coat Chews does not list biotin, zinc, or any silica or sulfur-donor ingredient. Brand marketing and brand-education copy do describe biotin, zinc gluconate, and vitamin C as supporting actives for skin discomfort, which would be categorically relevant to keratin and antioxidant logic if dose-disclosed.Biotin, zinc gluconate, and vitamin C are described in brand-education copy but are not enumerated with per-chew doses on the active-ingredients panel, and silica, sulfur donors, or amino-acid building blocks for keratin formation are not…Biotin, zinc gluconate and vitamin C work together to help soothe occasional skin discomforts like dryness and itching.PetLab Co. is a National Animal Supplement Council Primary Supplier Member, listed on the public NASC directory at nasc.cc, and the brand education layer describes passing an independent NASC facility audit and earning permission to display the NASC Quality Seal.No public lot-level Certificate of Analysis program, no named third-party contract laboratory, and no buyer-accessible batch-lookup tool.This Primary Supplier has been personally interviewed by NASC to ensure they understand membership requirements, as well as the quality standards they must uphold.Claim language on the PetLab Co. brand surface is reasonably disciplined for the category. Skin and coat support is framed around moisture, conditioning, dry-skin support, and 'occasional itching' rather than around allergy treatment or dermatitis treatment, and the brand education surface acknowledges that owners should consult a veterinarian for underlying conditions.No finished-formula peer-reviewed canine trial is referenced, and the 'occasional itching' framing sits on the loose edge of where the rubric prefers wellness-support language over discomfort-adjacent language.Targets dry skin, helps support occasional itching, and keeps your dog's coat conditioned through daily use.Daily-use design is one of the stronger features. The format is a pork-flavored soft chew with hickory smoke flavor, eliminating pill-administration friction and supporting daily palatability for most dogs.Only a 30-chew tub is exposed on the brand PDP, which is a short dosing horizon for dogs at the three or four chews per day serving level.Daily Serving: Under 14 lbs — 1 soft chew; 14 to 25 lbs — 2 soft chews; 26 to 38 lbs — 3 soft chews; over 38 lbs — 4 soft chews.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →16PLPetLab Co. · Pork-flavored soft chewPetLab Co. Skin & Coat Chews are omega-led soft chews with turmeric, apple cider vinegar, and vitamin E added to the formula. The active panel shows total omegas 225 mg, EPA 85 ...NASC Quality SealMade In USADose Disclosure Limited50.6/100Disclosure Gaps
17Rank50.6/100Disclosure Gaps17RankZPSoft chew50.6/100Disclosure GapsZesty Paws Skin & Coat Bites are a popular omega-led chew with fish oil, cod liver oil, flaxseed, zinc, vitamin E, biotin, and vitamin C. The label shows wild Alaskan fish oil 120 mg per chew, plus EPA and DHA as guaranteed-analysis percentages. The catch: there is no collagen, hyaluronic acid, ceramide, or amino-acid lane, and EPA/DHA are not shown as direct milligrams per chew.
Best forOwners who want a familiar soft-chew brand for omega-based skin and coat support.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingDose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Wild Alaskan fish oil, cod liver oil, flaxseed, zinc proteinate, vitamin E, biotin, and vitamin C.
- Chicken or bacon soft-chew formats with weight-banded dosing and large pack sizes.
- NASC membership and USA manufacturing support at the brand level.
What's not in it
- Collagen, gelatin, hyaluronic acid, ceramides, or amino acids.
- Direct EPA and DHA milligram amounts per chew.
- A public lot-level COA, named independent lab, or buyer-facing batch lookup.
Label snapshotEPA/DHA disclosed as % not mg · no collagen or HA laneWild Alaskan fish oil 120 mg/chew, cod liver oil, flaxseed, vitamin C, vitamin E 40 IU, zinc proteinate 2 mg, biotin 4 mcg?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe Zesty Paws brand product page enumerates the full ingredient list by identity but does not publish per-chew milligram amounts for the meaningful actives.EPA and DHA are disclosed as percentages rather than milligrams per chew, and fish oil, cod liver oil, and flaxseed amounts are not individually disclosed in milligrams.Guaranteed Analysis (per 2 soft chews): Crude Protein min 12%; Crude Fat min 13%; Crude Fiber max 4%; Moisture max 10%; Omega-3 Fatty Acids min 4.05%; Eicosapentaenoic Acid (EPA) min 2.15%; Docosahexaenoic Acid (DHA) min 0.65%; Zinc 2 mg; Vitamin E 40 IU; Biotin 4 mcg.The formula maps cleanly to barrier-lipid and antioxidant logic and lightly to keratin support. Fish oil, cod liver oil, and flaxseed cover EPA, DHA, and ALA contributions toward the lipid layer; vitamin E and vitamin C provide antioxidant coverage; zinc proteinate and biotin touch keratin-relevant nutrition.Hydration, dermal matrix, and a dedicated nail or follicle lane are missing. Adding a disclosed hyaluronic-acid or ceramide ingredient and a collagen, gelatin, or amino-acid component would lift from tier 4 toward tier 7 to 9.Each chew contains AlaskOmega® Fish Oil, a rich source of Omega-3 essential fatty acids EPA and DHA, plus antioxidant Vitamins C and E and biotin.Barrier-lipid logic is the strongest layer of this formula. Three lipid sources contribute to the barrier story — Wild Alaskan fish oil at 120 mg per chew, cod liver oil, and flaxseed — and EPA and DHA both appear in the guaranteed analysis at meaningful percentages.No hyaluronic acid, ceramide, or other hydration ingredient is included. Adding a disclosed hydration active and converting EPA and DHA to milligrams per chew would lift from tier 7 toward tier 9 to 10.Pea Flour, Garbanzo Flour, Tapioca Flour, Palm Oil, Flaxseed, Fish Oil, Natural Chicken Flavoring, Powdered Cellulose, Cod Liver Oil, D-alpha Tocopherol, Sunflower Lecithin, Coconut Glycerin, Natural Flavors, Ascorbic Acid (Vitamin C), Zinc Proteinate, Rosemary Extract, Citric Acid, Mixed Tocopherols, Biotin.The Skin & Coat Bites formula contains no collagen peptides, no gelatin, no marine collagen, no hydrolyzed protein, and no free-amino-acid lane mapped to dermal matrix support. Pea flour, garbanzo flour, and tapioca flour appear early in the ingredient list, but these are chew-base carriers and are not positioned or dosed as structural-protein actives.No structural-support ingredient appears in the formula. Adding disclosed collagen peptides, gelatin, marine collagen, or a hydrolyzed-protein lane with milligram disclosure would lift from tier 1 toward tier 7 to 10.Pea Flour, Garbanzo Flour, Tapioca Flour, Palm Oil, Flaxseed, Fish Oil, Natural Chicken Flavoring, Powdered Cellulose, Cod Liver Oil, D-alpha Tocopherol, Sunflower Lecithin, Coconut Glycerin, Natural Flavors, Ascorbic Acid (Vitamin C), Zinc Proteinate, Rosemary Extract, Citric Acid, Mixed Tocopherols, Biotin.The formula does include two keratin-relevant nutrients: zinc proteinate at 2 mg per two chews and biotin at 4 mcg per two chews. Both are categorically appropriate for skin and coat formulas.Biotin and zinc are present but light, and silica, sulfur donors, or amino-acid building blocks for keratin formation are missing.Zinc 2 mg; Vitamin E 40 IU; Biotin 4 mcg.Zesty Paws is a National Animal Supplement Council Primary Supplier member, listed on the public NASC directory at nasc.cc, and the brand displays the NASC Quality Seal on the Skin & Coat Bites product page.No public lot-level Certificate of Analysis program, no named third-party contract laboratory, and no buyer-accessible batch-lookup tool.This Primary Supplier has been personally interviewed by NASC to ensure they understand membership requirements, as well as the quality standards they must uphold.Claim language on the brand surface is generally disciplined for the category. Skin and coat support, antioxidant support, and immune support are positioned around omega fatty acids and antioxidant vitamins rather than around disease treatment. The marketing avoids explicit allergy-treatment, atopic-dermatitis-treatment, or hot-spot-treatment language on the surfaces reviewed.No finished-formula peer-reviewed canine trial is referenced, and downstream surfaces extend benefit language toward itch and shedding reduction more aggressively than the brand PDP qualifies.Each chew contains AlaskOmega® Fish Oil, a rich source of Omega-3 essential fatty acids EPA and DHA, plus antioxidant Vitamins C and E and biotin.Daily-use design is one of the strongest features. The format is a soft chew in chicken or bacon flavor, eliminating pill-administration friction and supporting daily palatability. Suggested daily dose scales with body weight at one chew for dogs up to 25 lbs, two chews for 26 to 75 lbs, and three chews for dogs over 75 lbs, which is appropriately species- and size-aware.Dosing instructions could be more granular for very large dogs and for split AM/PM administration. Adding explicit half-chew guidance and storage instructions on the brand PDP would lift from tier 8 toward tier 10.Suggested Daily Dose: Up to 25 lbs — 1 soft chew daily; 26 to 75 lbs — 2 soft chews daily; over 75 lbs — 3 soft chews daily.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →17ZPZesty Paws · Soft chewZesty Paws Skin & Coat Bites are a popular omega-led chew with fish oil, cod liver oil, flaxseed, zinc, vitamin E, biotin, and vitamin C. The label shows wild Alaskan fish oil 1...NASC Quality SealMade In USADose Disclosure Limited50.6/100Disclosure Gaps
18Rank48.6/100Sparse Public Evidence18RankNPPowder (cold-pressed pellets)Native Pet GutWell Itchy Skin
Native Pet · Powder (cold-pressed pellets)
Related BenchmarkPowder (cold-pressed pellets)Proprietary Blend48.6/100Sparse Public EvidenceNative Pet GutWell Itchy Skin is a gut-skin-axis product rather than a classic skin-and-coat formula. It uses a prebiotic blend 500 mg, a postbiotic blend 100 mg, and a four-strain probiotic blend at 500 million CFU per scoop, with vitamin E and zinc also included. The catch: it does not include omegas, collagen, hyaluronic acid, ceramides, biotin, silica, or MSM as a full integumentary stack.
Best forOwners who want to approach skin comfort through gut and microbiome support rather than through collagen or omega supplementation.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingDose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Prebiotic, postbiotic, and probiotic blends with category-level amounts disclosed.
- A pork-and-pumpkin cold-pressed pellet powder with a scoop-based daily serving.
- NASC Quality Seal support, USA manufacturing, and formulation by board-certified veterinary nutritionist Dr. Dan Su.
What's not in it
- Collagen, gelatin, amino acids, hyaluronic acid, ceramides, or omega-3 EPA/DHA.
- Biotin, silica, MSM, or disclosed vitamin E and zinc milligram amounts.
- A traditional skin, coat, barrier, and nail formula.
Label snapshot · proprietary6 named actives · gut-skin axis · powderPrebiotic Blend 500 mg, Saccharomyces cerevisiae 100 mg, Probiotic Blend 500M CFU, Vitamin E, Zinc?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsDose disclosure is partial. The brand publishes per-scoop totals for the two largest active categories (Proprietary Prebiotic Blend 500 mg, Proprietary Postbiotic Blend Saccharomyces cerevisiae 100 mg) and a combined potency figure for the four-strain probiotic blend (500 million CFU per scoop), with a 6.0 g scoop and 18.3 kcal per scoop disclosed.Publishing per-strain CFU splits for the four-strain probiotic blend, the FOS / MOS / beta-glucan split inside the prebiotic blend, and per-scoop milligrams for vitamin E and zinc would lift this from tier 7 toward tier 9-10.Proprietary Prebiotic Blend (FOS, MOS, Beta Glucans), Vitamin E (D Alpha Tocopherol), Saccharomyces cerevisiae (Postbiotic), Zinc, Proprietary Probiotic Blend (Lactobacillus rhamnosus, Limosilactobacillus reuteri, Lactobacillus plantarum & Bifidobacterium longum).Coverage routes through a single pathway. The formula's working hypothesis is the gut-skin axis, with prebiotic, probiotic, and postbiotic actives driving systemic skin support and vitamin E plus zinc supplying a small barrier-adjacent antioxidant and trace-mineral layer.Adding disclosed collagen, gelatin, or amino-acid actives plus biotin, silica, or sulfur donors at per-scoop milligrams would broaden coverage from the current 2 lanes (gut-mediated skin support, antioxidant trace-mineral support) toward…Native Pet takes an inside-out approach with a triple-biotic blend to help restore balance where it starts: in your dog's microbiome.Barrier and hydration support is claimed but lightly built. Vitamin E (D-Alpha Tocopherol) and zinc appear in the active list as the only disclosed barrier-adjacent nutrients, with no per-scoop milligrams surfaced. Flaxseed oil sits in the inactive list as a carrier and is not positioned as a dosed barrier-lipid active.Adding a disclosed omega-3 EPA / DHA dose, a ceramide-class nutrient, or a hyaluronic acid component at per-scoop milligrams, plus surfacing the existing vitamin E and zinc doses, would lift this from tier 4 toward tier 7-9.Vitamin E (D Alpha Tocopherol), Saccharomyces cerevisiae (Postbiotic), Zinc.No collagen peptides, gelatin, dosed protein, structural amino acids, or other dermal-matrix actives appear in the active ingredient list. Pork plasma sits in the inactive ingredient list as part of the pellet carrier and flavor base, not as a disclosed structural active with a per-scoop dose.Adding a disclosed collagen, gelatin, hydrolyzed protein, or amino-acid active at meaningful per-scoop milligrams would lift this from tier 1 toward tier 7-10. The dermal matrix is not addressed by the as-formulated active list.Active Ingredients per scoop (6.0 g): Proprietary Prebiotic Blend (FOS, MOS, Beta Glucans) 500 mg, Proprietary Postbiotic Blend (Saccharomyces cerevisiae) 100 mg, Proprietary Probiotic Blend 500 million CFU, plus Vitamin E and Zinc.Keratin and nail coverage is light. Zinc appears in the active list as a trace-mineral relevant to keratin formation, and vitamin E is barrier-adjacent, but neither dose is published per scoop on the consumer surface. Biotin, silica, MSM, methionine, cysteine, and other sulfur donors associated with keratin synthesis and nail strength are not in the formula.Surfacing the zinc and vitamin E milligrams and adding biotin, silica, MSM, or methionine at disclosed per-scoop doses would lift this from tier 2 toward tier 7-9. The keratin and nail layer is not the formula's intended target.Vitamin E (D Alpha Tocopherol), Saccharomyces cerevisiae (Postbiotic), Zinc.Testing posture is institutionally credible and document-light. Native Pet, Inc. is an NASC Primary Supplier with the NASC Quality Seal authorized — the highest NASC tier — verified independently by the NASC member directory.Publishing per-lot COA documents, a batch-lookup tool, named third-party laboratory partners, and CFU stability or potency-at-expiry testing would lift this from tier 7 toward tier 9-10.Native Pet, Inc. — NASC Primary Supplier, Quality Seal authorized, audited for supplements.Claim discipline is mixed by surface. The brand-side PDP keeps language qualified: 'supports skin hydration,' 'promotes a healthy skin barrier,' 'supports comfort during occasional itch,' with Board-Certified Veterinary Nutritionist formulation framing the evidence basis.Tightening the Chewy and PetSmart retail register away from 'allergy relief,' 'reduce itching,' and 'irritation from itching caused by seasonal allergies' toward the brand-PDP 'occasional itch' framing would lift this from tier 6 toward…Supports comfort during occasional itch.Daily-use design is among the most practical in the powder cohort. Cold-pressed pellet format with pork plasma and pumpkin as the carrier and flavor base, 6.0 g scoop with included scoop, 18.3 kcal per scoop, weight-banded dosing from under 10 lbs through 101+ lbs with explicit adjustment, advanced, and maintenance phases, and a published 1 scoop per 25 lbs body-weight rule.A published subscription cadence, explicit storage and shelf-life guidance, named third-party palatability data, and a re-seal indicator on the pouch would lift this from tier 9 toward tier 10.1 scoop per 25 lbs of body weight, given daily ... 60 or 120 scoops per bag ... 18.3 kcal per scoop ... age 3+ months ... 30 day guarantee.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →18NPNative Pet · Powder (cold-pressed pellets)Native Pet GutWell Itchy Skin is a gut-skin-axis product rather than a classic skin-and-coat formula. It uses a prebiotic blend 500 mg, a postbiotic blend 100 mg, and a four-str...Clean FormulaNASC Quality SealMade In USADose Disclosure Limited48.6/100Sparse Public Evidence
19Rank48.6/100Sparse Public Evidence19RankNDSoft chew48.6/100Sparse Public EvidenceNatural Dog Company Skin & Coat is a salmon-oil-led chew with a stronger omega story than many basic treats. Public materials show EPA 45 mg, DHA 39 mg, omega-3 120 mg, ALA 28 mg, and omega-9 75 mg per chew. The catch: the full Supplement Facts panel was not available on the main surfaces reviewed, and the formula does not include collagen, hyaluronic acid, ceramides, or a structural skin lane.
Best forOwners who want a soft chew built around salmon oil and disclosed EPA/DHA amounts.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingDose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Wild Alaskan salmon oil, fish oil concentrate, flaxseed oil, brown flaxseed powder, vitamin E, vitamin C, biotin, and brewer's dried yeast.
- EPA and DHA disclosed in milligrams per chew on available public surfaces.
- NASC Quality Seal display, USA manufacturing language, and FoodScience platform ownership after acquisition.
What's not in it
- A full public Supplement Facts panel on the main product surfaces reviewed.
- Collagen, gelatin, hyaluronic acid, ceramides, or amino acids.
- A public lot-level COA or named independent lab for the chew SKU.
Label snapshot7 actives · salmon oil + biotin · soft chewWild Alaskan salmon oil?Fish oil concentrate (EPA 45 mg, DHA 39 mg per chew)?Flaxseed (ALA 28 mg)?Vitamin E 15 IU?Vitamin C?Biotin?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe Natural Dog Company brand product page surfaces per-chew nutrient claims for the omega and antioxidant layer: EPA 45 mg, DHA 39 mg, vitamin E 15 IU, alpha-linolenic acid 28 mg, omega-3 120 mg, and omega-9 75 mg per chew. The full ingredient list is published in identity order.Salmon oil, fish oil concentrate, biotin, vitamin C, and flaxseed are not individually disclosed in milligrams per chew on any public surface retrieved, and a full Supplement Facts panel image was not captured.EPA: 45 mg; DHA: 39 mg; Vitamin E: 15 IU; Alpha Linolenic Acid: 28 mg; Omega 3: 120 mg; Omega 9: 75 mg.The formula maps cleanly to barrier-lipid logic and lightly to keratin-relevant nutrition. Salmon oil, fish oil concentrate, flaxseed, and flax seed oil cover EPA, DHA, and ALA contributions toward the lipid layer; vitamin E and vitamin C add antioxidant coverage; biotin touches keratin-relevant nutrition.Hydration, dermal matrix, and a dedicated nail and follicle lane are missing.Formulated with Omega-3 fatty acids from wild Alaskan salmon oil, plus Biotin and Vitamin E.Barrier-lipid logic is the strongest layer of this formula. Multiple lipid sources contribute to the barrier story — wild Alaskan salmon oil, fish oil concentrate, flax seed oil, brown flaxseed powder, and coconut oil — and EPA and DHA appear at meaningful per-chew milligrams (EPA 45 mg, DHA 39 mg, omega-3 120 mg total).No hyaluronic acid, ceramide, or other hydration ingredient is included. Adding a disclosed hydration active alongside the existing lipid stack would lift from tier 7 toward tier 9 to 10.EPA: 45 mg; DHA: 39 mg; Omega 3: 120 mg; Alpha Linolenic Acid: 28 mg.The Natural Dog Company Skin & Coat chew formula contains no collagen peptides, no marine collagen, no porcine or bovine collagen, no hydrolyzed protein, and no free-amino-acid lane mapped to dermal matrix support.No structural-support ingredient appears in the formula.Ground Chickpeas, Brewer's Dried Yeast, Sunflower Lecithin, Pea Protein, Vegetable Glycerin, Fish Oil Concentrate, Salmon Oil, Fish (Salmon), Brown Flaxseed Powder, Water, Gelatin, Flax Seed Oil, Ascorbic Acid (Vitamin C), Coconut Oil, Vitamin E (D-Alpha-Tocopherol), Natural Flavor, Mixed Tocopherols (a preservative), Biotin.The formula does include one keratin-relevant nutrient explicitly — biotin — alongside ascorbic acid (vitamin C) and vitamin E for antioxidant support of keratin-producing cells. Brewer's dried yeast contributes additional B-vitamins relevant to coat renewal. Biotin presence is categorically appropriate for a skin and coat formula.Biotin is present but its mcg dose per chew is not disclosed, and zinc, silica, MSM, sulfur donors, or amino-acid building blocks for keratin formation are missing.Formulated with Omega-3 fatty acids from wild Alaskan salmon oil, plus Biotin and Vitamin E.Natural Dog Company displays the yellow National Animal Supplement Council Quality Seal on its supplements and confirms on its certifications page that the brand has passed an independent third-party audit and maintains ongoing compliance with NASC quality requirements.No public lot-level Certificate of Analysis program for the Skin & Coat chew, no named third-party contract laboratory for the chew SKU, and no buyer-accessible batch-lookup tool for the chew.Look for the yellow Quality Seal on all of our supplements to know you're buying from a responsible supplier.Claim discipline is the weakest layer of the surfaces reviewed. The Amazon product title for this SKU reads 'Omega 3 Salmon Oil, Biotin and Vitamin E Support Shiny Coat, Healthy Skin and Normal Shedding, Promotes Comfort from Occasional Itch,' which extends into anti-itch-adjacent positioning rather than strict skin-barrier-support language.'Promotes comfort from occasional itch' framing and 'seasonal allergies' collection language sit at the anti-itch-adjacent and disease-adjacent boundary for a non-drug supplement, and no finished-formula canine clinical trial on the chew…Support Shiny Coat, Healthy Skin and Normal Shedding, Promotes Comfort from Occasional Itch.Daily-use design is one of the strongest features of this product. The format is a soft chew in natural salmon and pea flavor, eliminating pill-administration friction and supporting daily palatability.Dosing instructions could be more granular for very large dogs and for split AM and PM administration, and storage instructions are not surfaced on the brand PDP.Up to 25 lbs: 1 chew daily; 26-75 lbs: 2 chews daily; Over 75 lbs: 3 chews daily.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →19NDNatural Dog Company · Soft chewNatural Dog Company Skin & Coat is a salmon-oil-led chew with a stronger omega story than many basic treats. Public materials show EPA 45 mg, DHA 39 mg, omega-3 120 mg, ALA 28 m...Clean FormulaNASC Quality SealMade In USADose Disclosure Limited48.6/100Sparse Public Evidence
20Rank47.6/100Sparse Public Evidence20RankPPSoft chew47.6/100Sparse Public EvidencePet Parents Skin & Coat SoftSupps are omega-led salmon chews built around Epax omega-3, salmon oil, flaxseed, kelp, vitamin E, vitamin C, zinc, and biotin. The formula has a strong ingredient identity because Epax is a recognizable premium omega source. The catch: the brand page does not show a clear per-chew Supplement Facts panel with milligram amounts for the main actives.
Best forOwners who want a salmon-flavored omega chew and care about a recognized omega-3 source.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingDose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Epax omega-3 fish oil, salmon oil, flaxseed, dried kelp, vitamin E, vitamin C, chelated zinc, and biotin.
- A salmon-flavored soft chew with weight-banded dosing and strong brand-review visibility.
- NASC membership and USA facility quality claims, including SQF, FDA-inspected, and GMP-approved language.
What's not in it
- A structured per-chew dose panel for Epax omega-3, EPA, DHA, kelp, vitamins, zinc, and biotin on the brand PDP.
- Collagen, gelatin, hydrolyzed protein, hyaluronic acid, or ceramides.
- A public lot-level COA, named independent lab, or buyer-facing batch lookup.
Label snapshotper-chew mg amounts not disclosed on brand PDP · no collagen or HA laneEpax-branded omega-3 fish oil, salmon oil, flaxseed, dried kelp, vitamin E, vitamin C, chelated zinc, biotin?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe Pet Parents brand product page publishes the full ingredient identity list for Skin & Coat SoftSupps, including the Epax-branded omega-3 lead and supporting nutrients such as salmon oil, flaxseed, dried kelp, vitamin E, vitamin C, chelated zinc, and biotin.Per-chew milligram and microgram disclosure for Epax omega-3, EPA, DHA, kelp, salmon oil, vitamin E, vitamin C, zinc, and biotin is not surfaced as a structured panel on the brand PDP.Salmon, Pea Flour, Palm Fruit Oil, Tapioca Flour, Sweet Potato, Fish Oil, Flaxseed, Carrot, Tomato, Garbanzo Flour, Dried Kelp, Powdered Cellulose (coating only), Sunflower Lecithin, Vitamin E (d-alpha tocopherol acetate), Salmon Oil, Coconut Glycerin, Vitamin C (ascorbic acid), Sorbic Acid (natural preservative), Zinc (chelated), Biotin, Mixed Tocopherols (natural preservative), Rosemary Extract.The formula maps cleanly to barrier-lipid and antioxidant logic and lightly to keratin support. Epax-branded fish oil, salmon oil, and flaxseed cover EPA, DHA, and ALA contributions toward the lipid layer; vitamin E and vitamin C provide antioxidant coverage; chelated zinc and biotin touch keratin-relevant nutrition; dried kelp adds trace-mineral and iodine input.Hydration, dermal matrix, and a dedicated nail or follicle lane are missing. Adding a disclosed hyaluronic-acid or ceramide ingredient and a collagen, gelatin, or amino-acid component would lift from tier 4 toward tier 7 to 9.Epax® omega-3s, a clinically trusted pure form Omega-3 & fish oil source proven to support glossy coats and healthy skin.Barrier-lipid logic is the strongest layer of this formula. Three lipid sources contribute to the barrier story — Epax-branded omega-3 fish oil as the lead active, supporting salmon oil, and flaxseed — and the brand explicitly positions Epax as a recognized premium EPA and DHA source rather than a generic fish-oil identity.No hyaluronic acid, ceramide, or other hydration ingredient is included, and per-chew EPA and DHA milligrams are not disclosed.Salmon, Pea Flour, Palm Fruit Oil, Tapioca Flour, Sweet Potato, Fish Oil, Flaxseed, Carrot, Tomato, Garbanzo Flour, Dried Kelp, Powdered Cellulose (coating only), Sunflower Lecithin, Vitamin E (d-alpha tocopherol acetate), Salmon Oil, Coconut Glycerin, Vitamin C (ascorbic acid), Sorbic Acid (natural preservative), Zinc (chelated), Biotin, Mixed Tocopherols (natural preservative), Rosemary Extract.The Skin & Coat SoftSupps formula contains no collagen peptides, no gelatin, no marine collagen, no hydrolyzed protein, and no free-amino-acid lane mapped to dermal matrix support.No structural-support ingredient appears in the formula. Adding disclosed collagen peptides, gelatin, marine collagen, or a hydrolyzed-protein lane with milligram disclosure would lift from tier 1 toward tier 7 to 10.Salmon, Pea Flour, Palm Fruit Oil, Tapioca Flour, Sweet Potato, Fish Oil, Flaxseed, Carrot, Tomato, Garbanzo Flour, Dried Kelp, Powdered Cellulose (coating only), Sunflower Lecithin, Vitamin E (d-alpha tocopherol acetate), Salmon Oil, Coconut Glycerin, Vitamin C (ascorbic acid), Sorbic Acid (natural preservative), Zinc (chelated), Biotin, Mixed Tocopherols (natural preservative), Rosemary Extract.The formula does include three keratin-relevant nutrients: biotin, chelated zinc, and dried kelp as a trace-mineral source. Biotin and zinc are categorically appropriate building blocks for keratin formation, and chelated zinc is a more bioavailable form than zinc oxide.Biotin and zinc are present in identity but not in disclosed per-chew amounts on the brand PDP, and silica, sulfur donors, or amino-acid building blocks for keratin formation are missing.Vitamin E (d-alpha tocopherol acetate), Salmon Oil, Coconut Glycerin, Vitamin C (ascorbic acid), Sorbic Acid (natural preservative), Zinc (chelated), Biotin, Mixed Tocopherols (natural preservative), Rosemary Extract.Pet Parents is a National Animal Supplement Council Primary Supplier member, listed on the public NASC directory at nasc.cc, and the brand displays the NASC Quality Seal on the Skin & Coat SoftSupps product page.No public lot-level Certificate of Analysis program for active potency, no named third-party contract laboratory, and no buyer-accessible batch-lookup tool.This Primary Supplier has been personally interviewed by NASC to ensure they understand membership requirements, as well as the quality standards they must uphold.Claim language on the brand surface mixes responsible wellness positioning with disease-adjacent language. The PDP includes an explicit safety qualifier stating the product is not a cure for severe medical skin conditions and directing owners to consult a veterinarian for persistent itching, hot spots, or allergies, which is appropriate species-aware framing.Headline marketing uses Less Itch as a primary outcome claim alongside wellness language, and no finished-formula peer-reviewed canine trial is referenced.Skin & Coat SoftSupps® support daily skin and coat wellness but are not a cure for severe medical skin conditions. Always consult your vet for persistent itching, hot spots, or allergies.Daily-use design is one of the strongest features. The format is a salmon-flavored soft chew, eliminating pill-administration friction and supporting daily palatability. Suggested daily dose scales with body weight at one chew for dogs up to 25 lbs, two chews for 26 to 75 lbs, and three chews for dogs over 75 lbs, which is appropriately species- and size-aware.Only a 90-count pack is offered on the brand surface, and dosing instructions could be more granular with explicit half-chew guidance for split AM/PM administration.Dogs up to 25 lbs receive 1 chew daily; 26-75 lbs get 2 daily; over 75 lbs receive 3 daily. One jar lasts 1-3 months, depending on your dog's size.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →20PPPet Parents · Soft chewPet Parents Skin & Coat SoftSupps are omega-led salmon chews built around Epax omega-3, salmon oil, flaxseed, kelp, vitamin E, vitamin C, zinc, and biotin. The formula has a str...NASC Quality SealMade In USADose Disclosure Limited47.6/100Sparse Public Evidence- 21GPLambriar Vet - Dropship · Liquid (oil)Grizzly Pollock Oil is a liquid omega topper for buyers who want a simple fish-oil route to skin and coat support. The label discloses per-teaspoon omega-3, EPA, DHA, omega-6, a...NASC Quality SealMade In USADose Disclosure Limited47.2/100Sparse Public Evidence
22Rank47/100Sparse Public Evidence22RankPHSoft chew47/100Sparse Public EvidencePet Honesty Allergy Skin Health is an allergy-first chew that reaches the skin category through omegas, probiotics, antioxidants, zinc, and biotin. It names fish oil, flaxseed, krill, algae, turmeric, quercetin, black pepper, vitamin C, vitamin E, zinc proteinate, biotin, and an eight-strain probiotic blend. The catch: no per-chew active amounts are shown, so buyers cannot judge the strength of the omega, probiotic, biotin, zinc, or antioxidant doses.
Best forOwners who want an allergy-aisle chew with skin, immune, and gut-support positioning.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingDose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Omega-3 sources from fish oil, flaxseed, krill, and algae, plus turmeric, quercetin, black pepper, vitamin C, vitamin E, zinc, biotin, and probiotics.
- An eight-strain probiotic blend that gives the formula a gut-skin angle.
- NASC Quality Seal support and USA GMP manufacturing claims.
What's not in it
- Per-chew doses for the listed actives or total probiotic CFU.
- Collagen, gelatin, structural protein, hyaluronic acid, or ceramides.
- A public lot-level COA, named independent lab, or buyer-facing batch lookup.
Label snapshotCategorical ingredient list only · no per-chew mg, IU, or CFU disclosedOmega-3s (fish oil, flaxseed, krill, algae), EPA, DHA, Turmeric, Vitamin C, Zinc Proteinate, Quercetin, Black Pepper, Biotin, Vitamin E, 8-strain Probiotic Blend?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe brand PDP and Amazon retail listing both publish the active ingredient list categorically without per-chew mg, IU, or CFU disclosure for any active. Omega-3s are bundled as a single category 'from Fish Oil, Flaxseed, Krill, and Algae' with EPA and DHA listed but unquantified.Publishing a full per-chew active dose table (omega-3 mg with EPA/DHA split, biotin mcg, zinc mg, quercetin mg, turmeric mg, vitamin C mg, vitamin E IU, total probiotic CFU) on the brand PDP would lift this from tier 1-2 toward tier 8-9.Omega-3s (from Fish Oil, Flaxseed, Krill, and Algae), EPA, DHA, Turmeric, Vitamin C (L-Ascorbyl-2-Polyphosphate), Zinc Proteinate, Quercetin Dihydrate, Black Pepper, Biotin, Vitamin E, Probiotic Blend (B. subtilis, L. acidophilus, B. bifidum, L. delbrueckii, L. plantarum, L. brevis, E. faecium, L. fermentum).Coverage reaches four integumentary-adjacent domains, three of them directly: skin barrier lipids (omega-3s from fish oil, flaxseed, krill, and algae plus EPA and DHA), keratin and follicle support (biotin and zinc proteinate), and immune-and-histamine antioxidant tone relevant to skin discomfort (quercetin dihydrate, turmeric with black pepper, vitamin C, vitamin E).Adding disclosed hyaluronic acid for hydration and collagen or gelatin for the dermal matrix would broaden coverage from the current 3-4 lanes (barrier lipids, antioxidant tone, gut-skin axis, light keratin) toward the 5-6 domain coverage…Soothes skin-related issues associated with seasonal allergies. Promotes healthy skin. Supports a healthy immune system. Helps maintain normal histamine levels.The barrier-lipid side is the formula's strongest face-value lane: a four-source omega-3 stack from fish oil, flaxseed, krill, and algae with EPA and DHA called out by name. Conceptually, that combination spans marine long-chain omega-3 (fish oil, krill, algae) and plant short-chain omega-3 (flaxseed), which is a defensible barrier-lipid logic.Publishing total omega-3 mg per chew, an EPA/DHA mg split, and adding a hydration ingredient such as low-molecular-weight hyaluronic acid would lift this from tier 5 toward tier 8-9.Omega-3s (from Fish Oil, Flaxseed, Krill, and Algae), EPA, DHA.No collagen peptides, gelatin, structural protein, or dermal-matrix amino acids are disclosed in the active or inactive ingredient lists. The formula's claim to 'promote healthy skin' rests on omega-3 barrier lipids, antioxidant tone, and gut-skin probiotic support rather than on a structural-protein architecture.Adding disclosed collagen peptides, gelatin, hydrolyzed marine protein, or structural amino acids (proline, glycine, lysine, methionine) at meaningful per-chew doses would lift this from tier 1 toward tier 7-10.Omega-3s (from Fish Oil, Flaxseed, Krill, and Algae), EPA, DHA, Turmeric, Vitamin C (L-Ascorbyl-2-Polyphosphate), Zinc Proteinate, Quercetin Dihydrate, Black Pepper, Biotin, Vitamin E, Probiotic Blend (B. subtilis, L. acidophilus, B. bifidum, L. delbrueckii, L. plantarum, L. brevis, E. faecium, L. fermentum).Two keratin-relevant nutrients are present: biotin, which is a recognized cofactor for keratin formation, and zinc proteinate, which supports normal skin and coat turnover. Vitamin E and vitamin C add antioxidant support for follicle environment.Publishing biotin mcg, zinc mg, vitamin E IU, and adding a sulfur donor (MSM or methionine) plus an explicit nail outcome in the claim register would lift this from tier 5 toward tier 8-9.Zinc Proteinate, Quercetin Dihydrate, Black Pepper, Biotin, Vitamin E.Testing posture is institutionally solid but publicly thin. NASC verifies Pet Honesty as a Primary Supplier that 'passed a rigorous independent audit of their facilities' and qualifies to display the NASC Quality Seal, which is the highest NASC participation tier. The brand FAQ confirms manufacturing in a GMP-certified, FDA-registered U.S.Publishing a per-lot Certificate of Analysis program, a batch-lookup tool, and a named third-party laboratory would lift this from tier 6 toward tier 9-10. The current setup is institutionally credible but not batch-linked for buyers.Pet Honesty has passed a rigorous independent audit of their facilities, qualifying them to display the NASC Quality Seal — the symbol of a commitment to the highest standards of quality in the industry.Claim discipline is mixed and channel-dependent. The brand PDP holds a qualified register: 'soothes skin-related issues associated with seasonal allergies,' 'promotes healthy skin,' 'supports a healthy immune system,' and 'helps maintain normal histamine levels' — wellness language with 'supports' and 'helps' framing.Tightening the retail claim register away from 'Allergy & Itch Relief' headlines toward the brand-PDP 'soothes skin-related issues' framing, and publishing the evidence base for the histamine claim, would lift this from tier 6 toward tier…Soothes skin-related issues associated with seasonal allergies. Promotes healthy skin. Supports a healthy immune system. Helps maintain normal histamine levels.Daily-use design is practical. Salmon-flavored soft chew, 90-count container sized for roughly a 90-day supply at a 1-chew dose, weight-banded 1-4 chew daily dosing across 1-25 lbs through 76-100 lbs, and brand subscription cadence with a 20% Subscribe & Save discount ($33.99 list / $27.19 subscription). Format is owner-friendly: no mixing, no measuring, treat-like delivery.A published palatability acceptance study, explicit storage and shelf-life guidance on the PDP, and a multi-flavor option (duck is sold under a separate SKU rather than as a flavor toggle on this SKU) would lift this from tier 8 toward…Give one chew daily per 25lbs of weight: Small (1-25 lbs) 1 chew, Medium (26-50 lbs) 2 chews, Large (51-75 lbs) 3 chews, X-Large (76-100 lbs) 4 chews.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing ↗Read comparison →22PHPet Honesty · Soft chewPet Honesty Allergy Skin Health is an allergy-first chew that reaches the skin category through omegas, probiotics, antioxidants, zinc, and biotin. It names fish oil, flaxseed, ...NASC Quality SealMade In USADose Disclosure Limited47/100Sparse Public Evidence- 23GP· Liquid (oil)Grizzly Algal Plus is a dog and cat liquid oil built around flaxseed oil and Schizochytrium microalgae oil rather than fish oil. The label gives a strong per-teaspoon omega pane...Dose Disclosure Limited45.4/100Sparse Public Evidence
- 24FP· PowderSoothe is best read as a targeted gut-and-skin powder, not a broad beauty system. Its strongest buyer-facing feature is transparent per-scoop dosing for all five named actives, ...Every Dose DisclosedMade In USA45.2/100Sparse Public Evidence
- 25WP· Liquid (drops)Wonder Paws Collagen 3X is a liquid dog supplement positioned around skin, coat, nails, and joint support. The archives name collagen types I, II, and III, hyaluronic acid, and ...NASC Quality SealMade In USADose Disclosure Limited45.2/100Sparse Public Evidence
26Rank44.8/100Sparse Public Evidence26RankNPLiquid pump oil44.8/100Sparse Public EvidenceNative Pet Omega Oil is a simple liquid oil for owners who mainly want skin-barrier lipid support. It combines wild-caught salmon oil, wild-caught pollock oil, wheat germ oil, and biotin in a pump bottle. The catch: it does not show EPA or DHA milligrams per pump, and it does not cover collagen, hydration, dermal matrix, or broader nail-support nutrients.
Best forOwners who want an easy pump oil for daily omega support and do not need a complete skin-and-coat system.
Integumentary Biology Focus Every Dose DisclosedClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingDose Disclosure Limited
The product may use proprietary blends, incomplete active-by-active disclosure, or public labeling that does not clearly show the amount of each key ingredient.
What's in it
- Wild-caught salmon oil, wild-caught pollock oil, wheat germ oil, biotin, and mixed tocopherols.
- A pump bottle with a simple rule of one half-teaspoon pump per 10 lb of dog body weight.
- A formula developed under board-certified veterinary nutritionist Dr. Dan Su.
What's not in it
- EPA or DHA milligrams per pump on the brand PDP.
- Collagen, gelatin, MSM, hyaluronic acid, ceramides, chelated zinc, or silica.
- A public COA program, named independent lab, or NASC Quality Seal on the Omega Oil surfaces reviewed.
Label snapshot4 actives · per-pump EPA / DHA mg NOT disclosedWild-caught Salmon Oil?Wild-caught Pollock Oil?Wheat Germ Oil?Biotin?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsAll four actives are named on the brand PDP and across retailer surfaces (wild-caught salmon oil, wild-caught pollock oil, wheat germ oil, biotin), and mixed tocopherol is named as the natural preservative. Serving size is clearly stated at 1 pump (1/2 teaspoon) per 10 lbs of body weight, and a 17 kcal-per-pump calorie figure is published.No per-pump EPA or DHA milligram disclosure on the brand PDP, no salmon-to-pollock-to-wheat-germ ratio, and no per-pump biotin microgram figure on the primary brand surface.Active Ingredients: wild-caught salmon oil, wild-caught pollock oil, wheat germ oil, biotin.Coverage concentrates on the barrier-lipid lane. Salmon oil and pollock oil deliver long-chain marine omega-3 fatty acid substrate (EPA / DHA), wheat germ oil contributes plant-side omega-6 and omega-9 plus naturally occurring vitamin E, and biotin provides a small keratin-lane addition.Score sits at tier 4 because only two integumentary domains carry meaningful substrate.Omega Oil has wild-caught salmon, wild-caught pollock, wheat germ oil and biotin, which makes it a formula that has great benefits for shinier hair and better skin health.The lipid lane is multi-source rather than single-oil.The lipid side is reasonably built but ceramide-class ingredients and a discrete hydration nutrient (hyaluronic acid) are absent, and per-pump EPA / DHA values are not disclosed on the brand PDP.The product has a balanced ratio of omega 3, 6, and 9, by combining fish oil and wheat germ oil.No collagen source, no gelatin, no whey protein or amino acid blend, no bone broth, and no MSM-class matrix-support nutrient is present in the active-ingredient panel. The formula is intentionally built as an oil-led lipid product.No structural-support nutrient is present at all. Adding a collagen peptide, gelatin, or matrix-relevant protein source would lift this category from the floor.Active Ingredients: wild-caught salmon oil, wild-caught pollock oil, wheat germ oil, biotin.Biotin is included as a named active and is the only keratin-relevant nutrient in the formula. Biotin is a recognized cofactor in keratin synthesis and is a reasonable inclusion in a skin-and-coat oil, but it is a single nutrient rather than a layered keratin-and-nail strategy.Biotin is the sole keratin-lane nutrient and its per-pump microgram value is not surfaced on the brand PDP. Disclosing per-pump biotin and adding a chelated zinc form, silica, or MSM would lift this from tier 4 toward tier 7-9.Biotin enhances skin health and promotes a shiny coat.No third-party laboratory (NSF, Eurofins, or equivalent) is named on the brand PDP, the brand landing page, or the retailer listings examined for Omega Oil. No public Certificate of Analysis program is referenced for this SKU. No lot-level batch-lookup tool is provided to buyers. The NASC Quality Seal is not displayed on any Omega Oil surface reviewed.Third-party lab not named, no public COA, no batch-lookup tool, and no NASC Quality Seal surfaced for Omega Oil.Clinically researched ingredients in every formula.Species-appropriate framing is present at the structural level: the product is dog-specific, the dosing rule scales by canine body weight at 1 pump per 10 lbs, the lower age cutoff is stated as dogs 3 months and older, and the formulator is a board-certified veterinary nutritionist.The 'reduce itchy dandruff' and 'reduces dry, flaky skin' framings move toward symptom-relief language and no finished-formula canine trial on Omega Oil itself is referenced.Reduce itchy dandruff.Daily-use design is strong.Score stops below 9-10 because the wheat-germ-oil component is unsuitable for dogs on a wheat-restricted plan and that allergen guidance is not surfaced prominently at point of purchase, and because pump priming, bottle-tipping, and…1 pump per 10 lbs of body weight, given daily.Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Manufacturing page ↗Read comparison →26NPNative Pet · Liquid pump oilNative Pet Omega Oil is a simple liquid oil for owners who mainly want skin-barrier lipid support. It combines wild-caught salmon oil, wild-caught pollock oil, wheat germ oil, a...Made In USADose Disclosure Limited44.8/100Sparse Public Evidence- 27NV· Soft ChewNaturVet Aller-911 is a dog soft chew positioned around seasonal allergy support, normal histamine levels, skin moisture, respiratory health, and immune support. The active tabl...NASC Quality SealEvery Dose Disclosed44.2/100Sparse Public Evidence
28Rank38.6/100Sparse Public Evidence28RankZPSoft chew38.6/100Sparse Public EvidenceZesty Paws Allergy & Immune Bites are a high-visibility allergy and immune chew, not a full skin-and-coat system. The active panel shows bovine colostrum 200 mg, EpiCor Pets fermentate 170 mg, astragalus root 100 mg, and a six-strain probiotic blend at 500 million CFU. The catch: it does not include omega fatty acids, collagen, hyaluronic acid, ceramides, biotin, zinc, silica, or MSM for direct skin barrier, coat, or nail support.
Best forOwners who want a popular allergy-and-immune chew and are not looking for a complete skin, coat, and nail formula.
Integumentary Biology Focus Every Dose DisclosedClean FormulaPublic Lab AccessLot-Specific ResultsNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Colostrum, EpiCor Pets fermentate, astragalus root, and a six-strain probiotic blend with headline amounts disclosed.
- A soft chew with multiple flavor options, weight-banded dosing, and broad national distribution.
- NASC Quality Seal support, USA manufacturing, B-Corp certification, and a lot-number lookup tool.
What's not in it
- Omega fatty acids, collagen, gelatin, hyaluronic acid, ceramides, biotin, zinc, silica, or MSM.
- Per-strain CFU amounts for the probiotic blend.
- A structural skin, coat, barrier, and nail-support architecture.
Label snapshotThree named actives dose-disclosed per chew · probiotic strains share one CFU totalColostrum 200 mg, EpiCor Pets 170 mg, Astragalus Root 100 mg, 6-Strain Probiotic 500M CFU?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsDose disclosure is uneven across channels. The brand PDP lists active ingredient categories (EpiCor Pets, Colostrum, Astragalus Root, gut health blend) without any per-chew mg amounts on the primary buyer surface.Surfacing the per-chew dose panel on the primary brand PDP rather than only on retail mirrors would lift toward tier 8.Colostrum (Bovine) 200 mg, Dried Fermentate (Made Using Saccharomyces cerevisiae) (EpiCor Pets) 170 mg, Astragalus Root 100 mg, 6-Strain Gut Health Blend (Bacillus subtilis, Lactobacillus acidophilus, Lactobacillus plantarum, Lactobacillus brevis, Lactobacillus fermentum, and Lactococcus lactis) 500 Million CFU.Coverage of integumentary-system layers is narrow when scored against the eight-domain rubric. The formula is built around a gut-immune-itch architecture: bovine colostrum and EpiCor fermentate for immune modulation, astragalus root as a traditional immunomodulator, and a six-strain probiotic blend for gut flora.Adding disclosed omega fatty acids, hyaluronic acid, collagen, biotin, or zinc at per-chew doses would broaden coverage from the current 1-2 indirect integumentary lanes (gut-immune-skin axis) toward the 4-6 domain coverage required for…Provides seasonal allergy support, supporting the immune system, skin health, and normal gut flora ... help maintain normal histamine levels.No barrier-lipid or hydration actives are disclosed in the formula. The active panel contains colostrum, EpiCor fermentate, astragalus root, and a probiotic blend, with no omega-3 (EPA or DHA) or omega-6 fatty acid dose, no ceramide-class nutrients, and no hyaluronic acid.Adding disclosed omega-3 (EPA/DHA), omega-6, hyaluronic acid, or ceramide nutrients at meaningful per-chew doses would lift this from tier 1-2 toward tier 7-10. As-formulated, the barrier-lipid and hydration layer is not addressed.Inactive Ingredients: Citric Acid (a preservative), Coconut Glycerin, Flaxseed, Garbanzo Flour, Lamb, Mixed Tocopherols (a preservative), Natural Flavor (from Oregano, Flaxseed and Plum), Natural Vegetable Flavor, Palm Oil, Pea Flour, Powdered Cellulose, Rosemary Extract, Sunflower Lecithin.No collagen peptides, gelatin, structural amino acids, or other dermal-matrix nutrients are disclosed in the active or inactive ingredient panels. The formula's connection to skin is mediated entirely through gut-immune-itch logic. There is no protein or amino-acid active at any dose. By the rubric's structural criterion, this formula does not address the dermal matrix.Adding disclosed collagen, gelatin, protein, or amino-acid actives in a meaningful per-chew dose would lift this from tier 1 toward tier 7-10. The current architecture does not engage the dermal matrix.Active Ingredients (Per 1 Soft Chew): Colostrum (Bovine) 200 mg, Dried Fermentate (Made Using Saccharomyces cerevisiae) (EpiCor Pets) 170 mg, Astragalus Root 100 mg, 6-Strain Gut Health Blend 500 Million CFU.No biotin, zinc, silica, sulfur donors (MSM, methionine, cysteine), or other keratin- and nail-relevant nutrients are disclosed in the active or inactive ingredient panels. The formula is positioned around allergy, immune, and gut framing, and the keratin, nail, and follicle layer is entirely absent from the formulation.Adding biotin, zinc, silica, MSM, or methionine at disclosed per-chew doses would lift this from tier 1 toward tier 7-10. As-formulated, the keratin and nail layer is unaddressed.Active Ingredients (Per 1 Soft Chew): Colostrum (Bovine) 200 mg, Dried Fermentate (Made Using Saccharomyces cerevisiae) (EpiCor Pets) 170 mg, Astragalus Root 100 mg, 6-Strain Gut Health Blend 500 Million CFU.Testing posture is institutionally credible but light on public per-lot documentation. NASC has verified Zesty Paws as a Primary Supplier with the NASC Quality Seal, the highest NASC tier, including personal-interview vetting and a rigorous independent facility audit. The brand states it is GMP-certified and that products are made in the USA with US and imported ingredients.A static, pre-purchase-accessible COA library, a named third-party laboratory (NSF, Eurofins, or equivalent), and a published test-panel scope would lift this from tier 6 toward tier 9-10.Enter the lot number from the back of the package below to view test results for your product.Claim discipline is uneven across channels. The brand PDP uses qualified language ('provides seasonal allergy support,' 'supporting the immune system, skin health, and normal gut flora,' 'help maintain normal histamine levels') that sits within wellness-support framing.Tightening retail listing titles away from 'Probiotics for Itchy Skin & Ears' toward the brand-PDP 'seasonal allergy support' framing would lift toward tier 7-8.Provides seasonal allergy support, supporting the immune system, skin health, and normal gut flora ... help maintain normal histamine levels.Daily-use design is practical and well-suited to long-horizon supplementation. Soft chew format in three flavor variants (Lamb, Peanut Butter, Salmon) supports rotation and palate fit.Published storage and shelf-life guidance, a named third-party palatability study, and a senior-specific or sensitive-stomach loading protocol would lift from tier 8 toward tier 9-10.Small Dog (Up to 25 lbs): 1 Soft Chew Per Day. Medium Dog (26-75 lbs): 2 Soft Chews Per Day. Large Dog (Over 75 lbs): 3 Soft Chews Per Day.Last reviewed: May 21, 2026Sources: Product page · Retailer listing ↗Read comparison →28ZPZesty Paws · Soft chewZesty Paws Allergy & Immune Bites are a high-visibility allergy and immune chew, not a full skin-and-coat system. The active panel shows bovine colostrum 200 mg, EpiCor Pets fer...Lot-Specific ResultsNASC Quality SealEvery Dose Disclosed38.6/100Sparse Public Evidence- 29VB· TabletVet's Best Healthy Coat Shed & Itch Tablets is a dog tablet positioned by the brand around healthy coat, shedding, skin moisture, and "itch relief" language. The archived label ...Every Dose Disclosed38.2/100Sparse Public Evidence
- 30AB· CapsuleAnimalBiome Skin Rescue is best read as a targeted gut-skin support capsule, not a broad coat beauty chew. The label gives size-banded mg amounts for Epicor, marshmallow root, q...Dose Disclosure Limited35.0/100Sparse Public Evidence
- 31DV· Liquid (oil)Dinovite SuprOmega is a liquid menhaden fish oil for buyers who want a simple omega add-on rather than a multi-ingredient chew. The public label names omega-3, omega-6, DHA, EPA...Dose Disclosure Limited33.0/100Sparse Public Evidence
- 32GP· Liquid (oil)Grizzly Krill Oil is a simple dog-and-cat omega oil built around wild Antarctic krill, with omega-3 lipids and astaxanthin disclosed per teaspoon. It is easiest to understand as...Dose Disclosure Limited32.4/100Sparse Public Evidence
- 33NP· Air-Dried ChewNative Pet Allergy Chews are an adjacent pick for shoppers who want a chicken chew positioned around seasonal allergy comfort, immune support, and skin comfort rather than a ful...NASC Quality SealMade In USADose Disclosure Limited31.4/100Sparse Public Evidence
- 34DZNature's Farmacy · PowderDogzymes Biotin is a single-nutrient powder built around d-Biotin for buyers who specifically want a biotin-focused coat-support add-on. The archived page gives clear feeding di...Dose Disclosure Limited22.2/100Sparse Public Evidence
- 35FRFour Leaf Rover · PowderYeast Guard is a dog powder positioned around yeast balance, gut environment, and skin comfort rather than classic coat-shine nutrients. The label identifies a proprietary herba...Dose Disclosure Limited21.2/100Sparse Public Evidence
How we scored 36 dog skin & coat supplements.
About this ranking.
Each product was scored against the same eight criteria: dose disclosure, integumentary system coverage, barrier lipid and hydration architecture, dermal matrix and collagen support, keratin and follicle nutrient logic, batch testing, claim discipline, and daily usability. We used public product pages, label panels, testing pages, COA pages, retailer listings, and public documentation available when this page was reviewed.
Not every dog skin and coat supplement is built across all four integumentary lanes. Many products lean on omega-3 oil alone, biotin chews, or allergy and itch chews dressed up in skin and coat marketing. A smaller group is built across structural support, barrier lipids and hydration, keratin and follicle nutrition, and skin barrier resilience, immune comfort, and coat-cycle support. We mark those products with the Integumentary Biology Focus badge.
La Petite Labs makes Pet Gala, which is shown as a separate publisher benchmark and excluded from the numbered competitive ranking. Pet Gala is formulated for both dogs and cats. This page is a La Petite Labs scoring analysis, not independent third-party certification.
The score in 30 seconds.
Each criterion has a fixed weight. Each product earns a tier score for that criterion, and the weighted scores are added into a total out of 100. The same formula is applied to every product, using only public evidence available at the time of review.
What this ranking does not do
- Diagnose, treat, cure, or prevent disease.
- Certify or accredit any product.
- Replace veterinary advice.
- Assume anything beyond what brands disclose publicly.
What it does do
- Scores every product against the same eight criteria, then removes the publisher product from the numbered competitive ranking.
- Uses only public materials: brand pages, label panels, testing pages, COAs, retailer listings, and public documentation.
- Stays open to correction: brands may request review if public documentation was missed or has changed.
Inclusion rules: products enter this ranking when they are marketed to the category with public US availability and a retrievable label or supplement-facts panel; single-purpose formulas positioned outside the category (for example, joint-only products without healthy-aging framing on the longevity lists) are evaluated but excluded from the numbered ranking, and exclusions are held in the underlying dataset rather than silently dropped.
Update Policy
Annual major update. Quarterly correction window.
This ranking is reviewed on an annual major-update cycle, with limited correction windows for material changes. If a brand materially updates its label, dosing disclosure, COA access, product formulation, or public substantiation before the next annual update, La Petite Labs may issue a correction note without changing the full category methodology.
Brand Correction Policy
Bring evidence. We’ll review.
Scores are based on publicly available information at the time of review. If a brand has updated label, formula, COA, or substantiation materials, it may submit those materials for review. Corrections are evaluated under the same rubric used for every product.
View the Evidence Dataset
The complete scoring run, as machine-readable JSON.
The public dataset includes the scoring rubric, criterion definitions, product-level evidence, source quotes, and reasoning used for this ranking. Published for transparency review.
dog-skin-coat-scoring-dataset-2026.jsonReviewed21
Ranked20
Criteria8
Evidence sources130
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Frequently Asked Questions
How were the dog skin and coat supplements scored?
Each product was scored under a published 100-point rubric across eight criteria: dose disclosure, integumentary system coverage, barrier and hydration architecture, dermal matrix and collagen support, keratin and nail nutrient logic, batch testing, claim discipline, and daily usability.
Does La Petite Labs make a product shown on this page?
Yes. La Petite Labs publishes this report and makes Pet Gala. To avoid ranking its own product against competitors, Pet Gala is scored under the same rubric but shown separately as a publisher benchmark rather than included in the numbered ranking.
How did Pet Gala score?
Pet Gala scored 92.8/100 under this rubric. Its strengths and limitations are shown in the publisher spotlight, including the main roadmap item: finished-formula skin and coat evidence on Pet Gala itself.
Why is Pet Gala excluded from the numbered ranking?
Because La Petite Labs is the publisher. Keeping the publisher product outside the competitive list makes the ranking easier to trust while still letting readers inspect how it performs under the same rubric.
Does a lower score mean a product is bad?
No. A lower score may mean the product is narrower in scope, less dose-transparent, or supported by fewer public quality signals. Some lower-scoring products are still useful for a specific shopping need.
What does Integumentary Biology Focus mean on this page?
The Integumentary Biology Focus badge marks products built across multiple integumentary lanes — structural support, barrier lipids and hydration, keratin and follicle nutrition, and aging-immune balance — rather than relying on one ingredient class. Most products on the skin and coat shelf cover one lane only.
What does Dose Disclosure Limited mean?
Dose Disclosure Limited means the product does not clearly disclose the amount of each key active ingredient, may use proprietary blends, or otherwise makes active-by-active evaluation difficult from public label information.
Why are some products marked “adjacent” instead of “core”?
Adjacent products are shopper-relevant comparators that do not meet the strict multi-lane gate. Examples include single-lane omega oils, allergy and itch chews, and gut-skin probiotic products. They appear because buyers comparing skin and coat options will plausibly evaluate them, but they are not scored as full beauty systems.
