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 Longevity
Best Cat Longevity Supplements 2026
We scored 21 cat longevity supplements against the same eight criteria: dose transparency, independent testing, safety logic, formulation depth, and claim discipline. Public evidence only. Hollywood Elixir 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
Cat longevity supplements are early-stage, with many adjacent products standing in for true longevity systems.
The cat longevity field is still sparse. Many products are senior multivitamins, immune adjuncts, or heart/cognition products rather than integrated aging-biology formulas. Finished-formula cat trials are rare, so public label clarity, species logic, and restraint in claims matter more than usual.
- If you want more good days with your senior pet: separate basic senior wellness from formulas that actually map to energy, mitochondria, NAD+, resilience, and daily vitality.
- If the science sounds exciting: check dose disclosure, species logic, and testing access before trusting the headline mechanism.
- How to read our placement: Hollywood Elixir 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 senior cat support starts with visible problems: weight loss, stiff movement, dull coat, energy dips, and litter-box changes. Longevity support goes deeper. It looks at the biological systems that change as cats age, including cellular energy, NAD+ metabolism, mitochondrial function, oxidative stress, and immune balance. Only a handful of products on this page were built for that deeper layer; we mark them with the Aging Biology Focus badge.
- 02Full dose disclosure was even less common in the cat field than in the dog field. Liquid herbal blends, homeopathic dilutions, and proprietary “wellness” blends dominate the senior-cat aisle, and many of them resist active-by-active evaluation entirely.
- 03Cat-specific clinical evidence is sparse. The peer-reviewed work cited by most brands was conducted in humans, mice, dolphins, or dogs. Finished-formula clinical trials in cats were essentially absent from the public materials reviewed.
- 04Senior multivitamins, immune-antioxidant adjuncts, and single-pathway cognitive products dominate the cat senior-supplement market. They scored lower on longevity-specific pathway coverage because they’re built for one wellness area, not for the integrated aging-biology model the rubric asks for.
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 Hollywood Elixir.
Aging Biology Focus
Most senior dog supplements focus on what owners can already see: stiff movement, dull coat, digestion, comfort, or lower energy. This badge marks products built around the deeper biology of healthy aging — the internal systems that shift as dogs get older.
Every Dose Disclosed
You can see how much of each meaningful active ingredient your cat gets per serving. A long ingredient list means less if the amounts are hidden, blended together, or too small to judge.
Systems Approach
This badge goes to formulas that reach across several aging-related systems instead of leaning on one hero ingredient. For senior dogs, broader support often means thinking about energy, antioxidant defense, immune balance, cognition, and mobility together.
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 broad longevity 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 specific wellness area rather than broad aging-biology coverage across multiple longevity-relevant systems.
Higher scores reward
Breadth, disclosure, and substantiation.
- Coverage of multiple longevity pathways 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 problem rather than longevity-system 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.
Hollywood Elixir is shown separately because La Petite Labs publishes this report. Under the same rubric, it scores strongly because it combines dose-disclosed NAD+ support, antioxidant defense, mitochondrial cofactors, immune modulation, and lot-level quality verification in one daily formula — and it is formulated for both cats and dogs under weight-banded dosing rather than a one-species transfer.
Room for improvement / roadmap
- Publish finished-formula evidence in cats, where category-wide clinical data remains especially sparse.
- Continue making lot-level testing and quality documentation easier to connect to each delivered box.
- Add more public species-specific safety and palatability data for long-term daily use.
93.2/100
Publisher benchmark · excluded from ranking
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1Rank83.2/100Strong1RankTVSoft ChewThorneVet Longevity Complex
ThorneVet · Soft Chew
Longevity FormulaSoft Chew83.2/100StrongThorneVet Longevity Complex is one of the stronger cat-eligible formulas here because it combines taurine, an NAD+ precursor, and several polyphenols in a soft chew or powder format. Every active dose is shown, including 500 mg taurine and 100 mg nicotinamide riboside hydrogen malate per full serving. The catch: the dosing is built around a 25 lb body-weight unit, so most cat owners would need to give a fraction of a serving rather than a simple whole chew or scoop.
Best forOwners who want a veterinary-channel longevity formula with clear active doses and are comfortable measuring a fractional serving for a cat.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Taurine, nicotinamide riboside, quercetin, curcumin, green tea, resveratrol, and astaxanthin with per-serving amounts disclosed.
- A formula aimed at several healthy-aging areas, including cellular energy, antioxidant support, and inflammatory balance.
- NASC Quality Seal and USA manufacturing through a veterinary supplement channel.
What's not in it
- A simple cat-specific serving size for the average adult cat.
- A public lot-specific COA or batch lookup tool.
- A published clinical trial on the finished formula in cats.
Label snapshotAll seven actives disclosed at per-serving mg with branded phytosome grades namedTaurine, Nicotinamide Riboside Hydrogen Malate, Quercetin Phytosome, Curcumin Phytosome, Green Tea Phytosome, Trans-Resveratrol, Astaxanthin?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsEvery meaningful active ingredient is disclosed at a per-serving milligram amount on the public PDP, with no proprietary blend masking.None on actives. Branded phytosome / extract trade names (CurcuVET®, GreenSelect®, Veri-Te®, AstaReal®) clarify rather than obscure dose by identifying the specific raw-material grade.Taurine 500mg · Nicotinamide Riboside Hydrogen Malate 100mg · Quercetin Phytosome 75mg · Curcumin Phytosome (CurcuVET®) 50mg · Green Tea Phytosome (GreenSelect®) 50mg · Trans-Resveratrol (Veri-Te®) 40mg · Astaxanthin (AstaReal®) 3mgThe stack maps cleanly to at least five longevity-relevant pathways: (1) NAD+ / sirtuin support via nicotinamide riboside; (2) oxidative-stress / antioxidant capacity via astaxanthin and the polyphenol bench (quercetin, curcumin, green tea, resveratrol); (3) mitochondrial / cellular energy support via NR-driven NAD+ availability and astaxanthin; (4) inflammatory balance via…Cognitive / neuroprotective pathway is supported only indirectly through the antioxidant and NAD+ stack; no dedicated cognitive ingredient (e.g., phosphatidylserine, lion's mane, citicoline) is included.combines a powerhouse of ingredients for beneficially influencing the body's longevity pathways and promoting healthy aging in companion animalsBrand discloses contract manufacturer (Green Mountain Animal, Milton, Vermont), states NASC membership since 2002, claims 'all products carry the NASC Quality Seal,' and references on-site NASC audits every two years plus GMP compliance.No named third-party testing lab, no public per-lot COA, no batch-lookup tool. Adding a public COA program or naming the testing lab would lift toward tier 9-10.As a fully audited member of NASC, Green Mountain Animal's manufacturing processes comply with Good Manufacturing Practice (GMP) guidelinesVeterinary-channel positioning with explicit weight-based dosing ('one soft chew per 25 pounds of body weight 1-2 times daily'), a published caution panel covering blood thinners, GI sensitivity, stomach ulcers, and pregnancy: 'Do not use with blood thinners. May be a GI irritant. Do not use in animals with stomach ulcers.Cat-specific dosing nuance is not separately published despite cats being included on the powder PDP.Do not use with blood thinners. May be a GI irritant. Do not use in animals with stomach ulcers. Safe use in pregnant animals has not been established.Architecture is intentional and role-based: a NAD+ precursor (NR-HM) at a meaningful 100 mg per serving, an amino-acid longevity anchor (taurine 500 mg), and a polyphenol bench using branded phytosome forms (CurcuVET®, GreenSelect®, Veri-Te®, AstaReal®) selected for bioavailability rather than commodity equivalents.Public surfaces explain the stack at the ingredient level but do not publish a written 'why these together' architecture rationale connecting each active to a named pathway role.combines Nicotinamide Riboside, Taurine, Quercetin Phytosome, CurcuVET Curcumin Phytosome, Green Tea Phytosome, Resveratrol, and AstaReal Astaxanthin to activate longevity pathwaysClaim register is mostly within structure/function bounds — 'promotes healthy aging,' 'balances inflammatory processes,' 'reduces oxidative stress.' However, the PDP also states the product 'provides key nutritional support for the veterinary cancer patient,' which approaches disease-condition language and is unusual for a retail-channel longevity supplement.The 'veterinary cancer patient' framing sits closer to disease-state language than typical structure/function claims and would be problematic in a DTC-only context, though it is more defensible in a veterinary-practitioner channel.synergistically balance the body's inflammatory processes, while reducing oxidative stress, in addition to providing key nutritional support for the veterinary cancer patientSoft chew inactives are fully enumerated and pet-friendly: arabic gum, vegan bacon flavor, buffered white distilled vinegar, chickpea flour, citric acid, coconut glycerin, coconut oil, guar gum, rosemary extract, sunflower lecithin, sunflower oil, tapioca starch, water. Powder is even cleaner: flaxseed + silicon dioxide only.Sources of the vegan bacon flavor system and the specific binder/humectant rationale are not separately explained; chickpea flour acts as a structural carrier but is not framed as such.Arabic gum, bacon flavor (vegan), buffered white distilled vinegar, chickpea flour, citric acid, coconut glycerin, coconut oil, guar gum, rosemary extract, sunflower lecithin, sunflower oil, tapioca starch, waterTwo delivery formats (soft chew + powder) cover both treat-style and food-mix routines. Dosing is simple: one unit per 25 lbs body weight, 1-2x daily. Subscription is offered at 10% off with monthly / bi-monthly / quarterly cadence. 90-count container = approximately 30-90 days of supply depending on dog weight and 1x vs 2x daily dosing.Cat owners face the inverse problem: a typical 10 lb adult cat needs roughly 0.4 of a chew or scoop per serving, so daily use requires splitting units or under-dosing — both real adherence frictions.One soft chew per 25 pounds of body weight 1–2 times dailyLast reviewed: May 21, 2026Sources: Product page · Label panel · Manufacturing page · FAQ page1TVThorneVet Longevity ComplexThorneVet · Soft Chew · Core Longevity FormulaThorneVet Longevity Complex is one of the stronger cat-eligible formulas here because it combines taurine, an NAD+ precursor, and several polyphenols in a soft chew or powder fo...Aging Biology FocusSystems ApproachNASC Quality Seal83.2/100Strong
2Rank82.7/100Strong2RankCSCapsuleVetriScience Cardio-Strength Capsules — Heart Support for Cats & Dogs
VetriScience Laboratories (a FoodScience LLC brand) · Capsule
Longevity FormulaCapsule82.7/100StrongVetriScience Cardio-Strength is a capsule for cats and dogs built around heart and cellular-energy nutrients, not a generic senior multivitamin. It clearly lists taurine, L-carnitine, CoQ10, DMG, EPA, GLA, vitamin E, folic acid, and mineral cofactors on the label. The catch: it is still a capsule, so many cat owners will need to open it into food, and there is no public batch-level COA lookup.
Best forOwners who want heart and mitochondrial-support nutrients for a cat and can handle capsule dosing.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Taurine 250 mg, L-carnitine 250 mg, CoQ10 20 mg, DMG 50 mg, EPA, GLA, vitamin E, folic acid, and electrolyte cofactors per capsule.
- A dual-species formula with a clear one-capsule daily cat serving.
- NASC, SQF-certified manufacturing, FDA-registered facility language, and USA manufacturing.
What's not in it
- A flavored chew, liquid, or cat-first palatability system.
- A public lot-specific COA or named finished-product testing lab.
- A broad longevity formula with joint, cognitive, immune, and antioxidant coverage beyond the heart-energy stack.
Label snapshotFull per-active mg disclosure, no proprietary blend, dual-species (cats and dogs)L-Carnitine 250 mg, Taurine 250 mg, DMG 50 mg, Vitamin E 30 IU, EPA 25 mg, CoQ10 20 mg, GLA 10 mg, Folic Acid 0.9 mg, Magnesium 0.5 mg, Potassium 0.1 mg, Selenium 0.007 mg?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsFull individual active-dose disclosure on the Supplement Facts panel for every meaningful active ingredient, with no proprietary blends.No meaningful gap on disclosure. A minor improvement would be putting the full Supplement Facts panel directly on the brand-site PDP rather than asking buyers to find it through veterinary-channel distributors.Each capsule contains: L-Carnitine HCl 250mg, L-Taurine 250mg, N,N-Dimethylglycine HCl 50mg, d-alpha Tocopheryl Succinate (Vitamin E) 30 IU, Eicosapentaenoic Acid (EPA) 25mg, Coenzyme Q10 20mg, Gamma-Linolenic Acid (GLA) 10mg, Folic Acid 0.9mg, Magnesium (Citrate) 0.5mg, Potassium (Citrate) 0.1mg, Selenium (Sodium Selenite) 0.007mg.Multi-active formula mapping to four to five healthy-aging pathways with ingredient-to-role logic that is biologically coherent rather than decorative.No discrete NAD+ precursor (NR / NMN), no senolytic, no nootropic, and no joint or skin axis. The formula is intentionally narrow around cardiac and mitochondrial systems.Cardio Strength features 11 synergistic ingredients that are vital for maintaining normal cardiovascular function in aging cats and dogs.Strong infrastructure-level testing posture. FoodScience LLC (parent) is an NASC Primary Supplier and VetriScience is referenced as a founding NASC member with the Quality Seal, meaning the brand has cleared NASC's independent audit and adverse-event reporting requirements. Manufacturing facility in Williston, Vermont is SQF-certified, FDA-registered, and operated under cGMP.No public per-lot Certificate of Analysis, no batch-lookup tool, and no named third-party laboratory (NSF / Eurofins / Eagle Analytical etc.) attached to finished-product testing.Manufacturing facilities are SQF-certified and routinely audited for safety and quality control procedures. Each ingredient undergoes third-party testing for purity and composition.Species-aware safety logic is unusually well-developed for a longevity-adjacent formula. The product was designed dual-species (dogs and cats) and the actives match feline-specific biology directly — taurine is an essential amino acid for cats whose dietary requirement is non-negotiable, and L-carnitine is conditionally essential in carnivores with elevated cardiac demand.Cat-specific upper limits and weight-banded cat dosing (very small cats versus large Maine Coons) are not separately addressed. EPA / GLA fatty-acid serving for cats with pancreatitis history could be flagged more explicitly.Safe use in pregnant animals or those intended for breeding has not been proven. If the animal's condition worsens or does not improve, stop administration and consult your veterinarian.Coherent role-based architecture rather than an ingredient-count flex.Architecture is cardiac-axis dominant. A coherent longevity-class architecture would add at least one explicit NAD+ precursor or polyphenolic adjunct and an explicit cognitive ingredient.Cardio Strength combines the synergistic effects of 11 ingredients that are vital for elderly animals.Claim discipline is restrained for the longevity-adjacent category. The brand uses 'promotes cardiovascular health,' 'supports heart muscle function,' 'maintains healthy heart rhythm,' and 'supports cardiovascular functions in aging cats and dogs' — all category-defensible structure-function language.No published, finished-formula peer-reviewed canine or feline clinical trial on Cardio-Strength itself.This formula is recommended to support animals with pre-existing, sub-optimal cardiovascular functions, breeds that are pre-disposed to cardiovascular stress or senior pets that are showing signs of cardiovascular weakness.Excipient list is short, fully enumerated, and pet-appropriate: rice flour, vegetable cellulose, vegetable stearate. No propylene glycol, no glycerin, no xylitol, no artificial sweeteners, and no obviously contraindicated carriers.No flavor system and no documented palatability study (e.g., a Summit Ridge-class consumption study). Open-capsule fishy odor is a known acceptance friction in cats.Inactive Ingredients: rice flour, vegetable cellulose, vegetable stearate.Daily routine is straightforward for cats — one capsule per day, with the option to give it whole or open the capsule and sprinkle on food. For dogs the body-weight rule (1 capsule per 30 lbs daily, split AM/PM if more than one capsule) is logical but introduces a multi-capsule routine for medium-to-large dogs that some owners may find tedious over months.No flavored chew option for cats from the capsule SKU (Vetri Cardio soft chews exist only for dogs). No subscribe-and-save offered directly on the brand PDP.Cats: Give 1 capsule daily. Dogs: Give 1 capsule per 30 lbs of body weight, daily. If giving more than 1 capsule, divide between AM and PM.Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing2CSVetriScience Cardio-Strength Capsules — Heart Support for Cats & DogsVetriScience Laboratories (a FoodScience LLC brand) · Capsule · Core Longevity FormulaVetriScience Cardio-Strength is a capsule for cats and dogs built around heart and cellular-energy nutrients, not a generic senior multivitamin. It clearly lists taurine, L-carn...Aging Biology FocusNASC Quality SealEvery Dose Disclosed82.7/100Strong
3Rank78.5/100Solid With Gaps3RankLEPowderLife Extension Cat Mix — Advanced Multi-Nutrient Formula
Life Extension (Fort Lauderdale, FL) · Powder
Related BenchmarkPowder78.5/100Solid With GapsLife Extension Cat Mix is a broad cat-only daily nutrient powder with taurine and a visible supplement panel. It combines vitamins, minerals, amino acids, taurine, and a botanical layer in a 100 g powder format. The catch: it is still a single broad nutrient mix, not a role-separated all-in-one system.
Best forOwners who want a cat-only daily powder from an established supplement brand and care more about foundational nutrient coverage than full stack replacement.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- The formula includes taurine alongside vitamins, minerals, and amino acids.
- It comes as a once-daily powder mixed into food.
- The product is labeled gluten-free, non-GMO, and made by a brand with company-level quality testing standards.
What's not in it
- It does not include a marine EPA/DHA lane.
- It does not provide a dedicated collagen, ceramide, or meaningful skin-structure lane.
- It does not show public lot-specific COA lookup or NASC Quality Seal participation on the product page.
Label snapshot17 disclosed actives · no proprietary blends · scoop powderTaurine 150 mg, L-arginine 75 mg, Vitamin C 25 mg, TMG 25 mg, Rosemary/Thyme/Sage 10 mg, B-complex with folic acid 500 mcg, Vitamin E 5 IU, Vitamin A Betatene 95.5 IU, Green tea extract 1 mg (980 mcg polyphenols), Alpha lipoic acid 500 mcg, Probiotic concentrate 3 mg (250 million CFU across 4 strains)?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsEvery active ingredient is disclosed with an individual amount per 2-scoop serving and no proprietary blends.None material at the dose-transparency tier. The only minor friction is that absolute milligrams of probiotic strains within the 3 mg probiotic concentrate are not broken out per strain, and Vitamin A is reported in IU rather than mcg RAE.Vitamin C 25 mg; Vitamin E 5 IU; Green Tea extract (Leaf) 1 mg (Providing 980 mcg Polyphenols); Rosemary, Thyme And Sage Extracts 10 mg; Thiamine 2 mg; Riboflavin 1 mg; Niacin 2.5 mg; Pantothenic Acid 2 mg; Vitamin B6 2 mg; Vitamin B12 2 mcg; Folic Acid 500 mcg; Taurine 150 mg; L-Arginine 75 mg; Trimethylglycine (TMG) (As Betaine Anhydrous) 25 mg; Probiotic Concentrate 3 mg [L. Acidophilus, L. Plantarum, B. Bifidum, B. Lactis (Providing 250 Million CFU)]; Vitamin A Betatene 95.5 IU; Alpha Lipoic Acid 500 mcg.Despite being positioned as a cat multivitamin rather than a longevity stack, the formula touches multiple aging-related pathways through identifiable actives. Oxidative stress support is covered through Vitamin C, mixed tocopherols (Vitamin E), alpha lipoic acid, green tea polyphenols (980 mcg quantified), and a rosemary/thyme/sage botanical blend.Reaches four to five healthy-aging pathways (oxidative stress, methylation, gut-immune, basic mitochondrial energy, cardiovascular/renal amino acid support) but is not architected as a longevity stack.Cat Mix is a complete nutritional powder supplement for cats with essential nutrients and antioxidants, with essential amino acids arginine and taurine supporting healthy eyes, heart, and normal kidney function. The formula includes probiotics to support a healthy immune system and digestion, plus powerful antioxidant protection from alpha lipoic acid, vitamin C, and green tea extract.Testing infrastructure is among the strongest in the cat-longevity competitor set, but it inherits Life Extension's human-supplement quality program rather than being a pet-specific batch-linked system.Strong third-party infrastructure (NSF cGMP registration, ConsumerLab program participation) but no public lot-linked COA on the PDP, no batch-lookup tool, and no NASC Quality Seal.Life Extension makes member-ready Certificates of Analysis (COAs) available to customers upon request. These COAs contain all of the required tests as defined in the Finished Product Specification Packets (FPSP), including potency, heavy metals and micro. Life Extension's fulfillment facility earned cGMP registration from NSF International.Safety logic shows real species-appropriate reasoning. Taurine at 150 mg is a cat-essential amino acid the species cannot biosynthesize adequately and the dose is meaningful relative to typical AAFCO cat-food taurine guidance. L-arginine inclusion respects feline obligate-carnivore arginine sensitivity.Cat-specific safety rationale is implied through dose levels but is not explicitly written.Mix two (2) scoops a day into your pet's food... This product is not meant to replace veterinary care. Any animal not responding to nutritional therapy should be seen by a licensed, competent veterinarian. Always inform your veterinarian if your animal is taking a supplement.The formula is grouped on the label by biological role: 'Antioxidants' (Vitamin C, Vitamin E, green tea, rosemary/thyme/sage), 'Essential Vitamins' (B-complex and folic acid), 'Amino Acids' (taurine, L-arginine), 'Protein Synthesis & Water Balance' (TMG), 'Probiotics,' 'Mixed Carotenoids' (Vitamin A Betatene), and 'Glucose Metabolism & Longevity' (alpha lipoic acid).Strong role-based grouping on the label but the underlying brief is feline daily nutrition rather than longevity architecture.Cat Mix by Life Extension is a supplement for cats that provides all the nutrients that your kitty may not be getting from diet alone. It contains flavonoids, amino acids, antioxidants, probiotics, essential fatty acids, methylation enhancers, and more.Claim discipline is meaningfully better than the cat-longevity category average. Headline claims center on 'heart, kidney, and pancreatic function,' 'gut health,' and 'nutrient absorption' — functional language rather than anti-aging or lifespan-extension language.No finished-formula feline clinical trial referenced. Adding a cat-specific palatability or potency study (or a published feline trial on the finished formula) would lift toward tier 9-10.This product is not meant to replace veterinary care. Any animal not responding to nutritional therapy should be seen by a licensed, competent veterinarian. Always inform your veterinarian if your animal is taking a supplement.The excipient profile is unusually clean for a pet multi. No artificial flavoring is required because the active stack is small enough (1.176 g serving) to be mixed directly into food, and there are no obvious cat-contraindicated excipients (no xylitol, no propylene glycol, no garlic, no onion). Allergens are disclosed: contains egg and fish (tilapia).No published palatability study and no formal flavor-system disclosure. A named consumption study (Summit Ridge or equivalent) would lift toward tier 9-10.Allergens: Contains egg and fish (tilapia).Daily-use design is workmanlike rather than exceptional. The powder format with an included scoop sidesteps pill-fighting entirely, the 1.176 g serving is small enough to disappear into wet food, and the 100 g jar at 85 servings provides nearly three months of daily supplementation at the baseline cat weight.Manual scoop measurement and weight-based dose scaling create more daily friction than pre-portioned sachets.Mix two (2) scoops a day into your pet's food for cats weighing 6-9 pounds; adjust based on weight.Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing3LELife Extension Cat Mix — Advanced Multi-Nutrient FormulaLife Extension (Fort Lauderdale, FL) · PowderLife Extension Cat Mix is a broad cat-only daily nutrient powder with taurine and a visible supplement panel. It combines vitamins, minerals, amino acids, taurine, and a botanic...Every Dose DisclosedMade In USA78.5/100Solid With Gaps
4Rank72.3/100Solid With Gaps4RankCVCapsuleRx Vitamins Formula CV for Dogs & Cats
Rx Vitamins for Pets (a Swedencare AB brand since 2021) · Capsule
Longevity FormulaCapsule72.3/100Solid With GapsRx Vitamins Formula CV is a veterinary-channel capsule centered on heart and circulation support for dogs and cats. It discloses nine active ingredients, including hawthorn, L-carnitine, taurine, vitamin E, DMG, magnesium, potassium, coleus, and selenium. The catch: cats get a half-capsule serving, which means opening and splitting powder every day.
Best forOwners who want a veterinarian-channel cardiovascular supplement and are willing to manage half-capsule dosing for a cat.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Hawthorn, L-carnitine, taurine, vitamin E, DMG, magnesium, potassium, coleus forskolii, and selenium with per-capsule amounts disclosed.
- A founding NASC-member brand with veterinary formulation history and USA manufacturing.
- Restrained heart-support language rather than exaggerated anti-aging claims.
What's not in it
- A cat-specific chew, liquid, or sprinkle format.
- CoQ10, NAD+ support, omega-3s, or broad cognitive and immune support.
- A public lot-level COA or named third-party finished-product lab.
Label snapshot9 actives · full mg disclosure · cat dose ½ capsuleHawthorn berry, L-carnitine, L-taurine, vitamin E, DMG, magnesium citrate, potassium citrate, coleus forskolii, selenium (selenomethionine)?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsEvery active in Formula CV is disclosed with a specific milligram (or microgram, or IU) value per capsule. No proprietary blends, no grouped totals, no hidden actives.Reconciling the 100 mg / 3.2% vitexin vs 200 mg / 2% vitexin hawthorn discrepancy with an explicit revision history (and matching the brand PDP to current label) would lift to a clean 10.Hawthorn Berry (standardized 3.2% vitexin) 100mg, L-Carnitine (pharmaceutical grade) 100mg, L-Taurine (pharmaceutical grade) 50mg, Vitamin E (d-alpha tocopherol succinate) 75 IU, Dimethylglycine (DMG) 10mg, Magnesium (citrate) 10mg, Potassium (citrate) 10mg, Coleus Forskolii 10mg, Selenium (selenomethionine) 5mcg.Multi-active formula that maps to cardiovascular and cellular-energy pathways relevant to feline healthy aging.Adding a NAD+ precursor (NMN, NR, or even niacinamide at a meaningful dose), CoQ10 (the canonical mitochondrial cofactor for cardiac tissue — conspicuously absent from a cardio-positioned formula), an omega-3 source for cognitive and…Formula CV contains potassium and magnesium to help when the heart contracts and relaxes, as well as the amino acids taurine and carnitine. It also features a blend of antioxidants - hawthorn berry, vitamin E, and selenium - to help protect cardiovascular tissues and blood vessels from free radicals and oxidative stress.Rx Vitamins is a National Animal Supplement Council (NASC) primary supplier and — per Swedencare's acquisition disclosure and third-party coverage — a founding NASC member. NASC membership requires passing an independent third-party facility audit, ongoing compliance with quality control standards, adverse event reporting, labeling guidelines, and random product testing.Public lot-level COA program, an explicit batch-lookup tool tied to bottle lot numbers, and naming the specific third-party laboratory(s) used for finished-product testing would lift toward 9-10.Rx Vitamins has passed a rigorous independent audit of their facilities, earning them permission to display the Quality Seal, which demonstrates their commitment to the highest standards of quality in the industry.Species- and size-appropriate dosing is explicit: cats receive 1/2 capsule daily, dogs receive one capsule twice daily per 25-50 lbs body weight. Taurine inclusion is particularly appropriate for cats given that taurine is conditionally essential in feline diets and central to feline cardiac health — a meaningful species-aware design choice rather than a human-stack copy.Adding explicit cat-specific cautions for renal disease (where potassium and magnesium dosing matter), pregnancy / lactation guidance, and drug-interaction language around hawthorn berry and coleus forskolii for pets already on cardiac…Cats: 'give 1/2 capsule once daily'. Dogs: 'give one capsule twice daily for each 25 to 50 lbs of body weight'.The architecture is intelligible and role-based. Three structural amino-acid / methylation actives (taurine, L-carnitine, DMG) anchor cellular energetics and cardiac substrate. Two electrolyte cofactors (magnesium, potassium) support contractility and relaxation. Three antioxidants (hawthorn berry, vitamin E, selenium) buffer cardiovascular oxidative stress.Strengthening the architecture for a longevity-scored buyer would mean either adding a NAD+ precursor and CoQ10 (the obvious mitochondrial cofactor missing from a cardio formula), or explicitly framing the product as a cardiovascular…Formula CV combines the cardio-protective qualities of hawthorn berry along with other essential nutrients that support the structure and function of the cardiovascular system.Claim register is notably restrained for a category that often overclaims. The headline claim is 'Supports Normal Heart and Vasculature Functioning' — structure-function language rather than disease, cure, or lifespan extension.Publishing a finished-formula clinical case series or peer-reviewed trial in cats on Formula CV — even an open-label observational study — would lift to 10.Supports Normal Heart and Vasculature Functioning.Inactive ingredients disclosed at Dr. Judy Morgan's retail listing are rice flour, silica, and magnesium stearate — a short, conventional supplement excipient set, but capsule type (vegetable vs gelatin) is not consistently disclosed across the brand PDP or retailer listings. More material to the score: Formula CV is a hard capsule with no palatability system.Confirming vegetable vs gelatin capsule and disclosing this on the brand PDP, plus adding a documented palatability or open-and-mix-into-food protocol for cats, would lift to 7-8. Adding a chew or sprinkle form factor would lift further.Inactive Ingredients: Rice flour, silica, and magnesium stearate.Daily-use friction is significant for cats specifically. The cat protocol — 'give 1/2 capsule once daily' — requires the owner to open a hard capsule, divide the powder contents into two roughly equal doses, store the unused half, and either pill the cat or sprinkle the half-dose into food.Introducing a cat-specific SKU (smaller capsule, half-dose pre-measured, or a feline liquid / chew alternative), adding subscribe-and-save with explicit cadence, and surfacing capsule-splitting guidance would lift to 7-8.give 1/2 capsule once daily.Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing4CVRx Vitamins Formula CV for Dogs & CatsRx Vitamins for Pets (a Swedencare AB brand since 2021) · Capsule · Core Longevity FormulaRx Vitamins Formula CV is a veterinary-channel capsule centered on heart and circulation support for dogs and cats. It discloses nine active ingredients, including hawthorn, L-c...Aging Biology FocusNASC Quality SealEvery Dose Disclosed72.3/100Solid With Gaps
5Rank72.1/100Solid With Gaps5RankNCSoft chewVetriScience Nu Cat Senior 27+ Active Health Soft Chews
VetriScience Laboratories (a FoodScience LLC brand) · Soft chew
Related BenchmarkSoft chew72.1/100Solid With GapsVetriScience Nu Cat Senior 27+ is a cat-specific senior multivitamin soft chew, not a deep longevity formula. Its strength is practical: one daily chew with many vitamins, minerals, taurine, lysine, choline, EPA, DHA, and other senior-cat nutrients listed on the label. The catch: it does not include the bigger longevity ingredients buyers may expect, like NAD+ support, CoQ10, or dedicated cognitive actives.
Best forOwners who want a cat-specific senior multivitamin chew from a familiar veterinary supplement brand.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Taurine, lysine, choline, EPA, DHA, vitamins A, C, D, and E, B vitamins, and chelated minerals with many amounts disclosed.
- A one-soft-chew daily format made specifically for senior cats.
- NASC Quality Seal, SQF-certified manufacturing, FDA-registered facility language, and USA manufacturing.
What's not in it
- NAD+ precursors, CoQ10, PQQ, or a dedicated mitochondrial-support stack.
- A public batch-level COA or named independent testing lab.
- A finished-formula clinical trial showing senior-cat outcomes.
Label snapshotSenior-cat multivitamin breadth — not a longevity pathway formulationTaurine 25 mg, L-Lysine 50 mg, Choline 100 mg, EPA 6 mg, DHA 4 mg, full B-complex, ten chelated minerals, vitamins A/C/D/E per chew?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe Senior 27+ Active Health label discloses a full guaranteed analysis per 1.25 g soft chew across roughly thirty named actives, with individual amounts in milligrams, micrograms, or international units.Lifting toward 10 would require surfacing the per-chew guaranteed analysis on the brand's own PDP and Chewy detail page (it currently sits primarily on specialty-retail PDPs), plus a fish-oil constituent breakdown beyond EPA, DHA, and ALA…Per Soft Chew (1.25g): ... EPA 6 mg, DHA 4 mg, ... Taurine 25 mg, ... L-Lysine 50 mg, L-Tryptophan 5 mg, Choline 100 mg, Beta-Carotene 0.5 mg, Vitamin A 500 IU, Vitamin D3 100 IU, Vitamin E 15 IU, ... Ascorbic Acid (Vitamin C) 10 mg.The formula is built as a senior-cat multivitamin rather than a longevity system.Lifting toward 7-10 would require adding ingredients explicitly mapped to longevity pathways the formula currently does not cover — NAD+ support, mitochondrial cofactors, sirtuin-relevant polyphenols, or senolytic candidates — and…Heart, brain, and immune health support ... supports healthy aging.VetriScience is a founding member of NASC and carries the NASC Quality Seal as a Primary Supplier.Lifting toward 9-10 would require publishing a per-lot COA lookup tool linked to package codes, naming the third-party laboratory used for ingredient and finished-product testing, and surfacing batch-linked verification at the retailer PDP.VetriScience® is a founding member of NASC and was granted permission to display the Quality Seal by demonstrating the highest current standards of quality in the industry today.The product is built for cats, not adapted from a human stack. Species-specific safety reasoning is explicit on the label and brand surfaces: 'For use in cats only,' veterinarian-formulated, single daily soft chew sized for typical adult cat body weight, with the senior 9-10+ positioning clearly stated.Lifting to 10 would require body-weight-banded serving guidance for cats outside the typical 8-12 lb range and a clearer statement on use in cats with chronic kidney disease, hyperthyroidism, or other senior-cat comorbidities where…For use in cats only. Do not use in animals with bleeding disorders, unless directed by a veterinarian. Do not exceed recommended dose. ... Use with caution in pregnant or breeding animals, as safety has not been established. Contains quercetin; do not administer alongside blood-thinning medications.Architecture is a coherent senior-cat multivitamin: ten chelated minerals, full B-complex, fat-soluble antioxidants (A, C, E, beta-carotene), three feline-relevant amino acids (taurine, lysine, tryptophan), fish-oil omega-3s (EPA/DHA), choline, and arginine, all delivered in a 1.25 g fish-flavored soft chew at one chew per day.Lifting toward 7-10 would require either re-architecting the formula around an explicit longevity pathway map (NAD+, mitochondria, oxidative stress, immune modulation, cellular resilience) with each ingredient assigned a role, or…Daily multivitamin support ... Supports heart, brain, skin, organ and immune health.Claim discipline is strong relative to the longevity competitor set. The brand uses 'supports healthy aging,' 'heart, brain, and immune health support,' 'promotes normal energy and activity,' and 'skin, organ, and immune health' — all NASC-compliant structure-function language.Lifting to 9-10 would require linking specific claims to peer-reviewed feline nutritional evidence (taurine, EPA/DHA, B-vitamins in senior cats) and publishing a referenced formulation rationale rather than category-standard…Heart, brain, and immune health support ... promotes normal energy and activity ... supports healthy aging.Excipient profile is short and reasonable: an oat-flour and rye-flour base, brewers dried yeast, fish meal, glycerin, arabic gum, soy lecithin, fish oil, canola oil, calcium carbonate, maltodextrin, sodium alginate, calcium sulfate, water, safflower oil, mixed tocopherols and sorbic acid as preservatives, propionic acid as a secondary preservative, citrus pectin.Lifting toward 9-10 would require explicit rationale for each preservative and carrier choice, a published consumption / acceptance study in cats, and proactive guidance for cats with poultry, soy, or grain sensitivities.No artificial flavors, synthetic colors, or preservatives.Daily usability is one of the formula's strongest dimensions. The product is a single soft chew, given once daily, at a fish flavor cats accept (with the texture caveat noted above), with no pill-pocketing, no scoop-and-measure, and no mixing into food required. The 30-count package equals a 30-day supply at the recommended serving, which is intuitive for owners.Lifting to 10 would require body-weight-banded SKUs for cats meaningfully outside the typical 8-12 lb range, a published acceptance rate for finicky cats, and explicit storage and shelf-life guidance on the brand surface.Give one chew once daily.Last reviewed: May 21, 2026Sources: Retailer listing · Product page · Manufacturing page · Regulatory filing5NCVetriScience Nu Cat Senior 27+ Active Health Soft ChewsVetriScience Laboratories (a FoodScience LLC brand) · Soft chewVetriScience Nu Cat Senior 27+ is a cat-specific senior multivitamin soft chew, not a deep longevity formula. Its strength is practical: one daily chew with many vitamins, miner...NASC Quality SealEvery Dose DisclosedMade In USA72.1/100Solid With Gaps
6Rank71.6/100Solid With Gaps6RankFPPowderFera Pets Wellness Blend for Cats — All-in-One Powder Supplement
Fera Pets, Inc. (Glendale, CA) · Powder
Related BenchmarkPowder71.6/100Solid With GapsFera Pets Wellness Blend for Cats is one of the more practical all-in-one cat powders in the set. It gives clear doses for lysine, taurine, green-lipped mussel, cranberry, algal DHA, FOS, and probiotics, and it also offers public lot-level COA access. The catch: it is a whole-cat wellness powder, not a dedicated longevity formula built around NAD+, mitochondria, or cellular aging.
Best forOwners who want a cat-specific daily wellness powder with clear doses, taurine, probiotics, and public batch testing.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaPublic Lab AccessLot-Specific ResultsNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- L-lysine 250 mg, taurine 250 mg, green-lipped mussel 100 mg, cranberry, algal DHA, FOS, and 2 billion CFU probiotics.
- A veterinarian-formulated cat powder using freeze-dried bovine liver, kidney, and heart as the carrier.
- NASC Quality Seal, USA manufacturing, and a public per-lot COA lookup.
What's not in it
- NAD+ precursors, CoQ10, PQQ, acetyl-L-carnitine, or senolytic-style longevity ingredients.
- A published clinical trial on the finished cat formula.
- A backup chew or liquid format for cats who refuse powder.
Label snapshot7 actives · all doses disclosed · powderL-Lysine 250 mg, Taurine 250 mg, Green Lipped Mussel 100 mg, Organic Cranberry Extract 4:1 50 mg, AlgalDHA 25 mg, FOS 25 mg, Feline Heritage Probiotic Blend 2 billion CFU?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsActive-ingredient disclosure is unusually complete for the feline all-in-one category.Strain-by-strain CFU within the Feline Heritage Probiotic Blend is not broken out, and the freeze-dried bovine liver-kidney-heart carrier weight is not separately listed.L-Lysine, 250mg · Taurine, 250mg · Green Lipped Mussel, 100mg · Organic Cranberry Extract 4:1, 50mg · AlgaeDHA, 25mg · Fructooligosaccharide (FOS), 25mg · Feline Heritage Probiotic Blend, 2 billion CFUThe architecture maps actives to distinct cat-health systems: lysine to immune / respiratory support, taurine to feline-essential cardiac and retinal function, green-lipped mussel to joint mobility, cranberry to urinary tract / bladder, algal DHA to cognitive support, and the FOS + Feline Heritage Probiotic Blend to digestive balance.No NAD+ precursor, no mitochondrial cofactor (CoQ10, PQQ, acetyl-L-carnitine), no senolytic, and no aging-hallmark framing.Wellness Blend is an all-in-one supplement to support the full spectrum of feline health, from nose to tail. It supports your cat's immunity, heart, and eye health with Lysine and Taurine, promotes joint mobility with Green Lipped Mussel, aids urinary tract health with Organic Cranberry Extract, and boosts digestion and cognitive function with Algal DHA, probiotics, and prebiotic FOS.Testing infrastructure is among the strongest in the feline supplement competitor set. Fera Pets carries the NASC Quality Seal, holds active primary-supplier status in the public NASC directory, and undergoes the facility audits and Adverse Event Reporting System (NAERS) participation NASC membership requires.Specific contract laboratory not named on any public surface; per-lot COA scope (which assays are run per batch) not enumerated in plain language.All products carry the NASC Quality Seal, reinforcing our adherence to strict industry guidelines... Each batch undergoes independent third-party testing for purity, potency, and safety.The formula is built for cats rather than transferred from a human or canine supplement.Pregnancy / lactation guidance, drug-interaction language, and explicit cross-allergen disclosure (bovine carrier for cats sensitive to beef proteins) are not surfaced on the public brand pages reviewed.Fera's Wellness Blend is an all-in-one supplement designed to keep cats happy, healthy, and thriving with support for immunity, joints, heart, eyes, digestion, and brain power.The architecture is internally coherent for its declared purpose — each of the seven actives maps to a named feline-health system, the brand explains the ingredient-to-role assignment in plain language on the PDP, and there is no decorative clutter.Architecture is whole-body wellness, not longevity.High-quality ingredients, correct dosages, no fillers and a combination of Eastern and Western medicines.Claim discipline is generally responsible and stays inside structure/function language across surfaces.No finished-formula clinical trial on Wellness Blend for Cats, and no peer-reviewed citation set published on the PDP for the underlying actives.Supports immune health · Helps maintain healthy joints · Promotes normal heart health and function · Promote bladder health.Excipient design is short, transparent, and species-appropriate.No published third-party palatability study; mixed owner-reported acceptance rate on retail review surfaces; bovine-allergen guidance is not explicit.Inactive Ingredients: Grass fed, Freeze Dried Bovine Liver Kidney and Heart.Daily-use design is strong. The jar ships with an included scoop, dosing is once-daily sprinkled onto food, and 60 servings per container delivers a full two-month supply at the standard adult dose, supporting long-horizon supplementation without re-order pressure.Storage / open-jar shelf-life guidance and a backup format (chew, soft-chew, or treat) for owners whose cats reject the powder are not surfaced. Adding storage guidance and a chew-format companion SKU would lift toward tier 9-10.Feed orally with the included scoop. Use regularly on a long-term basis for best results.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing6FPFera Pets Wellness Blend for Cats — All-in-One Powder SupplementFera Pets, Inc. (Glendale, CA) · PowderFera Pets Wellness Blend for Cats is one of the more practical all-in-one cat powders in the set. It gives clear doses for lysine, taurine, green-lipped mussel, cranberry, algal...Lot-Specific ResultsNASC Quality SealEvery Dose Disclosed71.6/100Solid With Gaps
7Rank68.5/100Disclosure Gaps7RankOFLiquidPet Wellbeing Old Friend — Immune, System, & Joint Health for Senior Cats
Pet Wellbeing (Vancouver, BC) · Liquid
Longevity FormulaLiquid68.5/100Disclosure GapsPet Wellbeing Old Friend is a liquid herbal supplement for senior cats, aimed at immune, joint, and general vitality support. It uses eight named herbs and gives cat weight-band dosing, with unusually detailed safety cautions for medications and sensitive situations. The catch: the herbs are grouped into one total amount, so buyers cannot see how much of each herb their cat actually gets.
Best forOwners who prefer herbal senior-cat support and are comfortable giving a liquid by dropper twice daily.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean 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
- Alfalfa, guggul, reishi, astragalus, American ginseng, eleuthero, dandelion, and ginger in a liquid format.
- Cat weight-band dosing with detailed cautions around medications, pregnancy, blood thinners, and other sensitive use cases.
- NASC Quality Seal, FDA-registered GMP manufacturing language, and natural bacon flavor for acceptance.
What's not in it
- Individual amounts for each herb.
- A public batch-level COA or named independent testing lab.
- A once-daily chew, sachet, or cat-specific powder format.
Label snapshot8-herb senior tonic · grouped dose disclosure · per-herb mg NOT disclosedAlfalfa, guggul gum, reishi, astragalus, American ginseng, eleuthero, dandelion, ginger — grouped at 403 mg/ml total?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsActive herbs are fully identified by common and Latin name across an 8-herb stack (alfalfa, guggul, reishi, astragalus, American ginseng, eleuthero, dandelion, ginger). Inactive ingredients are enumerated (deionized water, natural bacon flavor, vegetable glycerin).Per-herb mg or mg/ml disclosure is absent. A breakout of each of the 8 actives (or even a tiered grouping — immune herbs, joint herbs, vitality herbs) would lift toward tier 7-8.403 mg per mlPathway coverage is the formula's strongest dimension.Pathway language is system-level (immune, joint, cognitive, energy, liver) rather than mechanism-level.Supports immune system health and joint mobility... Supports cognitive function for sharpness and clarity... Balanced energy levels... Comfortable movement with jumping support... Stable blood sugar levels... Healthy liver function.Pet Wellbeing carries the National Animal Supplement Council (NASC) Quality Seal awarded 2025-09-24, which requires regular manufacturing audits, ingredient sourcing verification, FDA/FTC/AAFCO compliance, and participation in the NASC adverse event reporting system.Named third-party lab, public COA library, and lot-to-bottle batch lookup are all absent. The NASC seal plus 'third-party tested' assertion supports tier 7, but lifting to tier 8-10 requires buyer-accessible COA documentation.Every herb and batch of our Old Friend is third-party tested to ensure purity and highest quality.Species-appropriate safety logic is unusually strong for the category. The cat SKU is sold as a distinct product from the dog SKU rather than as a shrunken-down human stack, with weight-banded dosing (0.25 ml twice daily for cats under 10 lb, 0.5 ml twice daily for cats over 10 lb) and a small total daily volume designed for feline tolerance.Published feline safety study on the finished Old Friend formula is absent, and several of the herbs (American ginseng, eleuthero, guggul) have thinner cat-specific safety literature than dog-specific.May have hypoglycemic effects. May be contraindicated in animals with hypertension and anxiety... Veterinary examination is recommended prior to use.Architecture is intentional and readable: 8 herbs grouped into three loose role buckets — immune (reishi, astragalus, eleuthero), joint/mobility (alfalfa, guggul, ginger), and adaptogenic vitality / cognition / liver (American ginseng, eleuthero, dandelion).Architecture is reasonable but not explicitly explained by role bucket. A visible role map (e.g., 'immune trio,' 'joint trio,' 'vitality trio') with per-active dose disclosure would lift toward tier 8-9.Designed by a holistic veterinarianClaim discipline is reasonable.No published, finished-formula feline clinical trial on Old Friend is referenced; supporting evidence relies on the underlying botanical literature.Supports cognitive function for sharpness and clarityExcipient list is short and fully enumerated: deionized water (extraction solvent), vegetable glycerin (sweetener and preservative), and natural bacon flavor (palatability driver). No propylene glycol, no artificial colors, no xylitol, no questionable fillers.Glycerin source (palm vs. coconut vs. soy) is not disclosed, no published feline palatability study is referenced, and the guggul gum-resin sedimentation behavior is not pre-explained for buyers in the dropper-use instructions.Deionized water, natural bacon flavor, vegetable glycerinDaily-usability design is solid. Format is a liquid dropper bottle — flexible for cats who refuse pills or chews, can be given directly into the mouth or mixed with wet food. Dosing is simple and weight-banded (0.25 ml twice daily under 10 lb, 0.5 ml twice daily over 10 lb). No refrigeration required.Twice-daily dosing creates two compliance events per day rather than one. A once-daily protocol (or a documented single-dose option) and a 'reluctant-cat' troubleshooting note would lift toward tier 8-9.Cats 10 lb and under: 0.25 ml twice daily; Cats over 10 lb: 0.5 ml twice daily... Administer product twice daily. Can be given during or after mealtime.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing7OFPet Wellbeing Old Friend — Immune, System, & Joint Health for Senior CatsPet Wellbeing (Vancouver, BC) · Liquid · Core Longevity FormulaPet Wellbeing Old Friend is a liquid herbal supplement for senior cats, aimed at immune, joint, and general vitality support. It uses eight named herbs and gives cat weight-band...Aging Biology FocusNASC Quality SealMade In USALow-Dose ConcernDose Disclosure Limited68.5/100Disclosure Gaps- 8W9Whisker9Whisker9 (parent company not publicly disclosed) · Sachet · Core Longevity FormulaWhisker9 is a pre-launch cat-only longevity supplement that builds its formula around the Cupp 9-year, 90-cat lifetime feeding study — the only landmark longevity trial ever pub...Aging Biology FocusSystems ApproachEvery Dose Disclosed66.5/100Disclosure Gaps
9Rank66.4/100Disclosure Gaps9RankCQCapsuleVetriScience Coenzyme Q10 10 mg Capsules Heart Supplement
VetriScience Laboratories (a FoodScience, LLC brand) — Williston, Vermont. Made in the USA in an SQF-certified facility operating under FDA cGMP guidance. · Capsule
Longevity FormulaCapsule66.4/100Disclosure GapsVetriScience Coenzyme Q10 is a simple, low-cost capsule built around one clear active: CoQ10. That makes it easy to understand if your main interest is mitochondrial or heart-support nutrition for a cat. The catch: it is a single-ingredient product, so it does not offer broad healthy-aging support on its own.
Best forOwners who specifically want a simple CoQ10 capsule for a cat and do not need a broad multi-active formula.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingNarrower Support Scope
The product appears focused on a specific wellness area rather than broad aging-biology coverage across multiple longevity-relevant systems.
What's in it
- Coenzyme Q10 10 mg per capsule with the active dose clearly disclosed.
- A capsule that can be opened and sprinkled into food for cats.
- NASC Quality Seal at the brand level, SQF-certified manufacturing, and USA manufacturing.
What's not in it
- NAD+ support, immune support, cognitive support, or a multi-ingredient antioxidant blend.
- A public lot-specific COA or named third-party testing lab.
- A flavored cat chew, liquid, or palatability-tested cat format.
Label snapshotSingle-active capsule · dose disclosed on the front of the labelCoenzyme Q10 (ubiquinone) 10 mg?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsSingle-active capsule with the active dose visible on the front of the label and in the product name itself: Coenzyme Q10, 10 mg per capsule. No proprietary blends.Per-mg amounts for individual inactive ingredients are not enumerated, and the active-dose panel lives more reliably on retailer listings than on the brand site itself.Coenzyme Q10: 10 mgMonotherapy capsule. One active — Coenzyme Q10 (ubiquinone) — is the entire functional payload.Single-active architecture.Active Ingredient: Coenzyme Q10 10 mg per capsule. Inactive Ingredients: cellulose, gelatin, malto-dextrin, silicon dioxide, vegetable stearate.Stronger than most competitors in this category at the program level, weaker than the best at the per-batch surface. FoodScience / VetriScience holds NASC primary-supplier status with an independently audited facility, displays the NASC Quality Seal, and is governed by the NASC random product-testing and adverse-event reporting program.No named third-party laboratory partner, no public per-lot COA, and no batch-lookup tool. Adding a public COA program with a lot-linked lookup (and naming the lab — NSF, Eurofins, or similar) would lift toward tier 9-10.Manufacturing facilities are SQF-certified and routinely audited for safety and quality control procedures, and strictly adhere to the FDA's current Good Manufacturing Practices (cGMP).Co-labeled for dogs and cats with weight-based dosing (one capsule per 10 lbs of body weight, divided AM/PM at higher doses) — which is genuinely cat-appropriate at the lower end of the curve (a typical 10 lb cat receives a single 10 mg capsule daily, and capsules can be opened and the powder sprinkled into food for cats that will not accept whole capsules).Cat-specific dosing illustration (e.g., a worked example for an 8-10 lb adult cat), explicit pregnancy / lactation language, and a single consolidated species-appropriate safety section on the brand page would lift toward tier 9-10.Give 1 capsule daily per 10 lbs of body weight. If giving more than 1 capsule, divide between AM and PM.Architecture is intentionally minimal: one active (Coenzyme Q10, 10 mg ubiquinone) in a small capsule with five to six inactive carriers.Architecture is single-active by design.Active Ingredient: Coenzyme Q10 10 mg per capsule. Inactive Ingredients: cellulose, gelatin, malto-dextrin, silicon dioxide, vegetable stearate.Claim discipline is notably restrained for the category. The brand markets the product as 'CoQ10 Healthy Heart' and describes 'cardiovascular support,' 'antioxidant protection,' 'cellular energy and ATP production,' and 'gum tissue and oral wellness' — these are appropriate, mechanism-aligned framings for CoQ10.Claim breadth (heart, immune, brain, energy, antioxidant, cardiovascular, gum tissue) is wider than a single-active CoQ10 monotherapy can substantiate from a finished-product study, and no peer-reviewed canine or feline trial on this…Supports cellular energy and ATP production. Cardiovascular support promoting heart muscle energy and function. Antioxidant protection combating oxidative stress in vital organs.Excipient list is short and conventional for a capsule: cellulose, gelatin (or vegetable cellulose in the vegetarian variant), maltodextrin, silicon dioxide, and vegetable stearate (or vegetarian leucine).Gelatin capsule shell is not ideal for vegetarian households (a vegetable-cellulose variant is sold but not consistently labeled across listings), maltodextrin may not be the preferred carrier for diabetic pets, and no published…Inactive Ingredients: cellulose, gelatin, malto-dextrin, silicon dioxide, vegetable stearate.Daily-usability is good but not best-in-class for cats specifically.Capsule format is less cat-friendly than flavored chews or pre-measured powder sachets, and no subscribe-and-save cadence guidance or storage / shelf-life surface is featured on the brand site.Give 1 capsule daily per 10 lbs of body weight. If giving more than 1 capsule, divide between AM and PM.Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Manufacturing page · Regulatory filing9CQVetriScience Coenzyme Q10 10 mg Capsules Heart SupplementVetriScience Laboratories (a FoodScience, LLC brand) — Williston, Vermont. Made in the USA in an SQF-certified facility operating under FDA cGMP guidance. · Capsule · Core Longevity FormulaVetriScience Coenzyme Q10 is a simple, low-cost capsule built around one clear active: CoQ10. That makes it easy to understand if your main interest is mitochondrial or heart-su...Aging Biology FocusNASC Quality SealEvery Dose DisclosedNarrower Support Scope66.4/100Disclosure Gaps
10Rank64.5/100Disclosure Gaps10RankCIPowderPet Wellbeing CORE IMMUNE CARE for Cats — Daily Antioxidant Support
Pet Wellbeing · Powder
Related BenchmarkPowder64.5/100Disclosure GapsPet Wellbeing CORE IMMUNE CARE is a cat powder focused on antioxidant and immune support. It names ingredients like glutathione, vitamin E, beta-carotene, quercetin, selenium, beta-glucans, and fish collagen, which makes the direction of the formula easy to understand. The catch: the product does not show individual ingredient amounts, so buyers cannot judge the dose behind the claims.
Best forOwners who want an antioxidant and immune-support powder for a cat and are comfortable with limited dose detail.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean 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
- A cat powder built around antioxidant, immune, and collagen-support ingredients.
- NASC Quality Seal and brand-level third-party testing language.
- A sprinkle-on-food format that avoids pills and may be easier for some cats.
What's not in it
- Individual milligram amounts for the active ingredients.
- NAD+ support, CoQ10, PQQ, cognitive actives, or a broad longevity stack.
- A public lot-specific COA, named testing lab, or batch lookup tool.
Label snapshot13 named actives, no proprietary blend - per-ingredient mg NOT disclosedHydrolyzed Fish Collagen Type I & III, PRALISUR (Micronized Algae >50% beta-1,3-glucans), L-Glutathione, L-Taurine, L-Carnitine, Vitamin E, Beta-carotene, Quercetin Dihydrate, Selenium, Carrot Powder, Tomato Powder, Apple Pectin, Broccoli Seed Extract?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe label enumerates active ingredients by identity (Hydrolyzed Fish Collagen Type I & III, PRALISUR micronized algae at >50% beta-1,3-glucans, L-Glutathione, L-Taurine, L-Carnitine, Vitamin E as d-alpha tocopherol succinate, Beta-carotene, Quercetin Dihydrate, Selenium, Carrot Powder, Tomato Powder, Apple Pectin, Broccoli Seed Extract) and inactives by identity (Brown rice…No per-ingredient milligrams on any public surface. Serving size is volumetric (teaspoons) rather than mass-based.Active Ingredients: Hydrolyzed Fish Collagen Type I & III, PRALISUR (Micronized Algae - >50% beta-1,3-glucans), L-Glutathione, L-Taurine, L-Carnitine, Vitamin E (d-alpha Tocopherol succinate), Beta-carotene, Quercetin (Dihydrate), Selenium, Carrot Powder, Tomato Powder, Apple Pectin, Broccoli Seed Extract.The formula clusters around two healthy-aging pathways: oxidative-stress support (L-glutathione, vitamin E, beta-carotene, quercetin, selenium, broccoli seed extract sulforaphane, tomato lycopene) and immune modulation (PRALISUR beta-1,3-glucans, hydrolyzed fish collagen peptides).Architecture is a single oxidative-stress and immune cluster. Adding a NAD+ precursor, mitochondrial cofactor (CoQ10 / PQQ), cognitive active, or senolytic with disclosed per-ingredient mg would lift this toward tier 7-10.CORE IMMUNE CARE provides a targeted, holistic blend of antioxidants to help maintain cellular health and normal immune function.Pet Wellbeing's entire 131-SKU dog-and-cat line carries the NASC Quality Seal as of September 2025, with company-wide certification reaffirmed in March 2026. NASC requires a third-party audit every two years and ongoing compliance with FDA, FTC, and AAFCO guidelines plus participation in NASC's adverse-event safety-monitoring system.Third-party lab is not named, no public per-lot Certificate of Analysis is surfaced, and no batch-lookup tool is available.Every batch of our CORE IMMUNE CARE is third-party tested to ensure purity and the highest quality. Plus, our manufacturing facility is FDA-registered and rigorously adheres to Good Manufacturing Practices (GMP).Safety logic is comparatively strong for the cat category.Quercetin and high-dose vitamin E carry theoretical feline-specific considerations that the brand could address with more explicit guidance; the kidney and bleeding-risk language is present but generic.Cautions: Safety in pregnant or breeding animals has not been established. Not recommended with chemotherapy drugs. Contraindicated with blood thinners.The architecture reads as an intentional antioxidant and immune cluster rather than a trend-stacked ingredient list.Architecture is coherently scoped to antioxidant and immune support but does not span the multi-pathway longevity system definition.CORE IMMUNE CARE is your cat's daily immune-supporting supplement, formulated by a leading veterinarian with expertise in pet nutrition, and is an antioxidant powerhouse perfect for cats of all ages, especially seniors.Claim register is comparatively restrained for the category. The brand frames benefits as 'protects cells against damaging free radicals,' 'maintains cellular health and normal immune function,' and 'supports joint, heart, and eye health,' avoiding lifespan-extension, disease-cure, or anti-aging-reversal language.No published, finished-formula feline clinical trial on CORE IMMUNE CARE itself is referenced. Mechanism citations rely on general ingredient research rather than on a cat-specific outcomes study.Protects cells against damaging free radicals... helps maintain cellular health and normal immune function... supports joint, heart, and eye health.Inactive ingredient list is short and enumerated by identity: brown rice flour (carrier), natural vegetarian beef flavor (palatability), silicon dioxide (flow agent). No propylene glycol, no glycerin, no xylitol, no artificial colors, no questionable preservatives.The 'natural vegetarian beef flavor' identity is generic; naming the specific palatant or flavor system and citing a published feline palatability or consumption study (analogous to a Summit Ridge protocol) would lift toward tier 9-10.Inactive Ingredients: Brown rice flour, natural (vegetarian) beef flavor, silicon dioxide.Daily-use design is strong for a cat supplement. Powder format sprinkles onto wet or dry food, bypassing the pill-refusal challenge that defines feline compliance. Weight-banded teaspoon dosing (1/4 tsp under 10 lbs, 1/2 tsp over 10 lbs) is simple enough for most owners.Volumetric teaspoon dosing is less precise than a calibrated scoop, and no scoop appears to be included with the jar per the surfaces examined.Adult cats 10 lbs and under: 1/4 teaspoon daily. Over 10 lbs: 1/2 teaspoon daily. Administer during or after mealtime.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing10CIPet Wellbeing CORE IMMUNE CARE for Cats — Daily Antioxidant SupportPet Wellbeing · PowderPet Wellbeing CORE IMMUNE CARE is a cat powder focused on antioxidant and immune support. It names ingredients like glutathione, vitamin E, beta-carotene, quercetin, selenium, b...NASC Quality SealMade In USADose Disclosure Limited64.5/100Disclosure Gaps
11Rank63.6/100Disclosure Gaps11RankNVSoft chewNaturVet VitaPet Senior Daily Vitamins Cat Soft Chews
NaturVet (a Garmon Corp brand; subsidiary of Swedencare AB) · Soft chew
Related BenchmarkSoft chew63.6/100Disclosure GapsNaturVet VitaPet Senior Daily Vitamins is a senior-cat soft chew for basic daily vitamin and mineral support. It clearly lists many nutrients, including calcium, phosphorus, vitamins, minerals, glucosamine, and inositol. The catch: it is a senior multivitamin, not a true longevity formula, and many cats may still resist the chew format.
Best forOwners who want a mainstream senior-cat multivitamin chew with clear label amounts and NASC-backed manufacturing.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWhat's in it
- Vitamins A, D3, E, C, B vitamins, minerals, glucosamine HCl 50 mg, and inositol 10 mg per two-chew serving.
- A senior-cat soft chew from a founding NASC supplier with USA manufacturing.
- A broad basic-nutrition format aimed at overall senior wellness.
What's not in it
- Taurine, EPA/DHA, CoQ10, NAD+ precursors, or dedicated cognitive-aging ingredients.
- A public lot-level COA or named independent testing lab.
- A guarantee that cats will accept the chew; the file notes real palatability complaints in retail reviews.
Label snapshotSenior-cat multivitamin breadth - no taurine, no EPA/DHA, no longevity pathway activesGlucosamine HCl 50 mg, Vitamin A 420 IU, Vitamin D3 150 IU, Vitamin E 4 IU, full B-complex, eight chelated minerals, Vitamin C 4 mg, Inositol 10 mg per 2-chew serving?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe brand product page publishes a full guaranteed analysis per 2 soft chews across twenty named actives in named units.Lifting toward 10 would require disclosing per-chew amounts (currently only per-2-chew totals are published), breaking out the 'salmon flavor' and 'natural flavoring' constituent fractions, and adding body-weight-banded dose guidance so…Per 2 Soft Chews: Calcium 40 mg, Phosphorus 31 mg, Iron 10 mg, Zinc 5 mg, Copper 0.2 mg, Manganese 0.15 mg, Iodine 0.1 mg, Cobalt 0.1 mg, Potassium 0.031 mg, Vitamin A 420 IU, Vitamin D3 150 IU, Vitamin E 4 IU, Thiamine 0.81 mg, Riboflavin 0.001 mg, Pantothenic Acid 0.684 mg, Niacin 3.4 mg, Pyridoxine 0.41 mg, Glucosamine HCl 50 mg, Inositol 10 mg, Calcium Ascorbate (Vitamin C) 4 mg.The formula is built as a senior-cat daily multivitamin, not as a longevity system.Lifting toward 7-10 would require adding feline-essential longevity-adjacent actives the formula currently omits (taurine, EPA/DHA, choline, L-carnitine, CoQ10) and publishing an ingredient-to-pathway map that connects existing actives to…Full spectrum of daily vitamins and minerals.NaturVet carries the NASC Quality Seal as a founding preferred supplier and is independently listed in the NASC directory through 2027-09-15.Lifting toward 9-10 would require publishing a per-lot COA lookup tool linked to package codes, naming the independent laboratory used for ingredient and finished-product testing, and surfacing batch-linked verification at the retailer…Certified member of the NASC (National Animal Supplement Council), which means our products carry their trusted Quality Seal ... FDA registered and inspected facility ... Third-party audited by UL (Underwriters Laboratories) ... All new ingredients are tested three times by an independent laboratory ... Each batch is tracked and recorded, so we can trace every product from start to finish.The product is built for cats rather than adapted from a human stack. The label is cat-specific, the soft chew is sized for typical adult feline body weight, the serving size is fixed at 2 chews per day, and the brand surfaces the NASC-required 'Intended for intermittent or supplemental feeding only' caution.Lifting toward 9-10 would require body-weight-banded serving guidance for cats outside the typical 8-12 lb range, explicit shellfish-allergen exclusion, pregnancy / lactation language, drug-interaction guidance, and proactive cautions for…Intended for intermittent or supplemental feeding only.Architecture is a coherent senior-cat multivitamin: eight named minerals, fat-soluble vitamins (A, D3, E), water-soluble vitamins (C, B-complex), glucosamine HCl for senior-pet joint support, and inositol, delivered in a salmon-flavored soft chew at two chews per day.Lifting toward 7-10 would require either re-architecting the formula around an explicit longevity pathway map (NAD+, mitochondria, oxidative stress, immune modulation, cellular resilience) with each ingredient assigned a role, or…Provides vitamins and minerals that may be missing from daily diet.Claim discipline is strong relative to the longevity competitor set.Lifting to 9-10 would require linking specific claims to peer-reviewed feline nutritional evidence (glucosamine HCl in feline joint support, fat- and water-soluble vitamins in senior cats) and publishing a referenced formulation rationale…Promotes overall health and wellness for senior cats ... Provides vitamins and minerals that may be missing from daily diet.Excipient profile is fully enumerated: potato, brewers dried yeast, glycerin, flaxseed, lecithin, dicalcium phosphate, canola oil, water, salmon flavor, dried shellfish digest, tapioca starch, sorbic acid (preservative), natural flavoring, mixed tocopherols (preservative), and vegetable oil.Lifting toward 8-10 would require a published consumption / acceptance study in cats addressing the documented palatability friction, explicit rationale for sorbic acid and mixed tocopherols, smaller chew form or scored chew for cats…Potato, brewers dried yeast, glycerin, flaxseed, lecithin, dicalcium phosphate, canola oil, water, salmon flavor, dried shellfish digest, tapioca starch, sorbic acid (preservative), natural flavoring, mixed tocopherols (preservative), vegetable oil.Daily usability is solid on the practical axes and softer on the palatability axis. The product is a soft chew given at a fixed 2-chew daily serving, with no scoop-and-measure, no pill-pocketing, and no mixing into food required when the cat accepts the chew. The 60-count package equals a 30-day supply at the recommended serving, which is intuitive for owners.Lifting toward 9-10 would require resolving the documented palatability friction (smaller or alternative-flavor chew, published acceptance data), body-weight-banded SKUs for cats meaningfully outside typical adult weight, and clarifying…Give 2 soft chews per day.Last reviewed: May 21, 2026Sources: Product page · Manufacturing page · Regulatory filing · Retailer listing11NVNaturVet VitaPet Senior Daily Vitamins Cat Soft ChewsNaturVet (a Garmon Corp brand; subsidiary of Swedencare AB) · Soft chewNaturVet VitaPet Senior Daily Vitamins is a senior-cat soft chew for basic daily vitamin and mineral support. It clearly lists many nutrients, including calcium, phosphorus, vit...NASC Quality SealEvery Dose DisclosedMade In USA63.6/100Disclosure Gaps
12Rank61/100Disclosure Gaps12RankOTLiquidNHV Old Timer for Cats
NHV Natural Pet Products (Vancouver, BC) · Liquid
Longevity FormulaLiquid61/100Disclosure GapsNHV Old Timer is an alcohol-free liquid herbal supplement for senior cats. It combines six herbs for joint comfort, immune support, and vitality, and the glycerin-water carrier is a sensible choice for cats. The catch: all six herbs are grouped under one total dry-herb amount, so individual doses are not visible.
Best forOwners who want a traditional herbal liquid for a senior cat and are comfortable dosing by dropper twice daily.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean 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
- Guggul, Asian ginseng, ginger, astragalus, alfalfa, and cayenne in an alcohol-free glycerin and water base.
- A cat weight-band dose of 0.5 ml twice daily for cats up to 15 lb.
- GMP-certified manufacturing and organic/HACCP/Ecocert sourcing credentials at the brand level.
What's not in it
- Individual amounts for each herb.
- A public finished-product COA, named third-party lab, NASC Quality Seal, or batch lookup.
- A once-daily format or pre-measured cat serving.
Label snapshotSix-herb tincture · per-active mg NOT disclosedGuggul, Asian Ginseng, Ginger, Astragalus, Alfalfa, Cayenne (147 mg dry-herb total combined)?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsSix herbs are named by botanical species and plant part (Commiphora mukul oleo-gum-resin, Panax ginseng root, Zingiber officinale rhizome, Astragalus membranaceus root, Medicago sativa leaf, Capsicum annuum fruit) with no proprietary blend wrapper hiding identity. The carrier matrix is also fully disclosed at the macro level: 50% purified water and 50% vegetable glycerin.Per-active milligram disclosure would lift this score toward tier 7-9.Active Ingredients: Commiphora mukul (Guggul) [oleo-gum-resin], Panax ginseng (Asian Ginseng) [root], Zingiber officinale (Ginger) [rhizome], Astragalus membranaceus (Astragalus) [root], Medicago sativa (Alfalfa) [leaf], Capsicum annuum (Cayenne) [fruit]. Inactive Ingredients: 50% Purified Water, 50% Vegetable Glycerin. Total dry herbs: 147mg dry equivalent.Six herbs mapped to a multi-pathway architecture: Guggul (joint-discomfort easing, lipid-related anti-inflammatory action), Ginger and Cayenne (anti-inflammatory and circulation tonics), Astragalus (immune phagocytic activity, interferon support), Asian Ginseng (immune adaptogen, vitality / energy), Alfalfa (vitamin/mineral/amino-acid nutritive matrix).Adding distinct mitochondrial / cellular-resilience ingredients (CoQ10, PQQ, NAD+ precursor) with clear pathway assignment would lift toward tier 9-10.Old Timer is a natural, vet-formulated, vet-approved herbal supplement specially formulated to provide support for inflamed joints, a healthy immune response and vitality.NHV asserts a GMP-certified manufacturing facility in British Columbia, FDA registration, USDA Certified Organic and BC Certified Organic credentials, plus Ecocert and HACCP accreditations.Naming the third-party lab (e.g., Eurofins, NSF, a Canadian equivalent), publishing per-lot finished-product COAs to buyers, and either pursuing the NASC Quality Seal or surfacing a public batch-lookup tool would lift to tier 7-8.All NHV pet remedies are manufactured at a GMP state-of-the-art facility... products must meet stringent in-house standards before being tested a second time by a third-party lab. Raw plant materials have certificates of analysis and go through a rigorous testing process prior to production.Species-appropriate signals are real but mixed. The product is sold as a single SKU shared across cats and dogs with a body-weight-banded dose chart in milliliters (0-15 lbs at 0.5 ml BID up through 75+ lbs at 3.0 ml BID), so a small cat gets a meaningfully smaller volume than a large dog.A cat-only SKU with a separate feline dose chart (rather than a shared dog-and-cat bottle), an explicit kitten-vs-senior dose differentiation, and a published feline tolerability study for the herb combination would lift to tier 9-10.Do not use Old Timer in pregnant or nursing animals, and it should be used in moderation in cases of sensitive digestive tract.Architecture reads as a coherent herbalist formula rather than a trend stack.Per-ingredient mg disclosure plus an explicit cellular-resilience / mitochondrial layer (CoQ10, PQQ, NAD+ precursor) integrated into the herbalist base would lift to tier 9-10.Old Timer combines Guggul, Ginseng, Ginger, Astragalus, Alfalfa, and Cayenne — each ingredient serves a specific purpose: Guggul eases uncomfortable arthritis symptoms, Asian Ginseng contains natural immune-supporting properties, Ginger is an antioxidant and anti-inflammatory, Astragalus helps support the immune system, Alfalfa contains vitamins and minerals, and Cayenne is a tonic with anti-inflammatory properties.Claim register is comparatively restrained for the category. The brand uses 'support for cats with arthritis,' 'eases inflammation,' 'provides joint support and relief,' 'supports a healthy immune response and vitality,' and an FAQ line that 'antioxidants are known to slow down the aging process.' These are support-framed and qualified, not lifespan-extension or cure claims.A published feline-specific tolerability or outcome study on this exact six-herb combination would lift to tier 9-10.The herbs present in this formulation have many antioxidant properties... antioxidants are known to slow down the aging process.Excipient list is short, fully disclosed, and species-appropriate: 50% purified water and 50% vegetable glycerin as the carrier, with no ethanol, no propylene glycol, no xylitol, no artificial colors, no artificial preservatives.A published feline palatability / acceptance study and an explicit flavor strategy for cayenne-sensitive cats would lift to tier 9-10.Inactive Ingredients: 50% Purified Water, 50% Vegetable Glycerin.Liquid tincture format with a dropper, twice-daily dosing, body-weight-banded ml dose chart, and sprinkle-on-food or direct-mouth administration. A typical cat at under 15 lbs gets 0.5 ml twice daily, so a single 100 ml bottle covers roughly 100 days at the small-cat dose — which is genuinely long-horizon and aligns with the senior healthy-aging use case.Once-daily dosing (or a clear once-daily option), a published subscribe-and-save cadence with explicit shipment intervals, and a flavored chew or pre-measured sachet alternative for cats that resist liquid dosing would lift to tier 9-10.0-15 lbs: 0.5 ml twice daily. 16-30 lbs: 1.0 ml twice daily. Refrigerate after opening; 6-month shelf life.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing12OTNHV Old Timer for CatsNHV Natural Pet Products (Vancouver, BC) · Liquid · Core Longevity FormulaNHV Old Timer is an alcohol-free liquid herbal supplement for senior cats. It combines six herbs for joint comfort, immune support, and vitality, and the glycerin-water carrier ...Aging Biology FocusLow-Dose ConcernDose Disclosure Limited61/100Disclosure Gaps
13Rank55.8/100Disclosure Gaps13RankSPTabletStandard Process Feline Whole Body Support
Standard Process Inc. (Palmyra, WI) · Tablet
Related BenchmarkTablet55.8/100Disclosure GapsStandard Process Feline Whole Body Support is a veterinary-channel multisystem tablet with a long whole-food formulation heritage. It combines whole-food micronutrient sources, organ and tissue extracts, and botanicals under clinician-directed use. The catch: it lacks public per-ingredient dose disclosure and uses a tablet format that many cats resist.
Best forOwners working with a veterinarian who want a professional-channel whole-food cat supplement rather than a consumer powder or mousse.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean 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
- It includes whole-food sources such as nutritional yeast, carrot, and alfalfa.
- It includes organ and tissue extracts such as bovine spleen, liver, adrenal, and kidney.
- It is made in a GMP-certified U.S. facility with extensive in-house testing for identity, potency, microbes, heavy metals, and pesticides.
What's not in it
- It does not publicly disclose per-tablet mg amounts for the whole-food, organ, and botanical components.
- It uses a tablet format, which commonly creates refusal or crushing friction for cats.
- Its testing is not surfaced as public third-party lot-specific COA access.
Label snapshotMulti-active whole-food tablet · per-active mg NOT disclosed beyond sodium, zinc, chromium Guaranteed AnalysisWhole-food multi-active tablet: bovine glandular extracts (liver, kidney, adrenal, heart, spleen, trachea, bone, jejunum, orchic), organic juice powders (alfalfa, pea vine, buckwheat, swiss chard, beet), amla, L-glutamine, L-carnitine, inositol, choline bitartrate, New Zealand green mussel, chromium yeast, zinc amino acid chelate?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe label enumerates every ingredient by identity in descending order — bovine liver, organic alfalfa juice powder, bovine liver PMG extract, bovine trachea, bovine bone, bovine heart PMG extract, bovine spleen, ovine spleen, L-glutamine, rice bran, porcine jejunum, amla extract, bovine kidney PMG extract, bovine kidney, oat flour, bovine adrenal Cytosol extract, nutritional…Per-tablet milligram amounts are disclosed only for sodium, zinc, and chromium. Glandular extracts, juice powders, amla, L-glutamine, L-carnitine, inositol, choline, and green mussel are listed by identity without milligram values.Guaranteed Analysis (Per Tablet): Sodium (max): 5 mg, Zinc (min): 180 mcg, Chromium (min): 5 mcg.Brand framing is multi-system maintenance — 'Provides general multisystem support for daily maintenance of all body systems with emphasis on a healthy endocrine system' — anchored to a whole-food nutrient delivery model rather than to a longevity-pathway architecture.The formula reads as multi-system maintenance, not longevity-pathway design.Provides general multisystem support for daily maintenance of all body systems with emphasis on a healthy endocrine system.Standard Process publicly describes a strong in-house quality program — Palmyra, Wisconsin certified-organic farm and certified-organic manufacturing facility, in-house chemists and microbiologists testing at each production stage, and brand-stated adherence to FDA cGMP requirements.No named external third-party laboratory, no public per-lot Certificate of Analysis, no batch-lookup tool, and no NASC Quality Seal for the Veterinary Formulas line.Standard Process is only available through healthcare professionals.Species-appropriate logic is a comparative strength. The product is a species-specific feline SKU developed inside the Standard Process Veterinary Formulas line — explicitly built for cats rather than scaled down from a human or canine formula.Public surfaces do not explicitly surface pregnancy/lactation guidance, allergen flags for dairy-sensitive cats (the formula contains nutritional yeast and bovine glandulars but not dairy proteins per se), or shellfish-allergy guidance…One tablet two times per day, or as directed.Architecture is coherent within Standard Process's own framework — a whole-food nutrient feeding model anchored by glandular extracts (liver, kidney, adrenal, heart, spleen, trachea, bone, jejunum, orchic), organic juice powders from the Palmyra farm (alfalfa, pea vine, buckwheat, swiss chard, beet), food-form trace minerals (chromium yeast, zinc amino acid chelate), and…The formula is not architected as a longevity-pathway system.We grow ingredients on our certified organic farm in Wisconsin.Claim discipline is a comparative strength for this product.There is no finished-formula feline clinical trial on Feline Whole Body Support, and no published research on the specific multi-ingredient blend. Practitioner endorsements substitute for finished-formula evidence.These statements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent disease.Other-ingredient list is short and named: honey, maltodextrin, and calcium stearate. There are no propylene glycol, glycerin, xylitol, or aggressive synthetic flavor systems. The palatability rationale is the whole-food carrier itself — Dr.No published feline palatability study. Honey and maltodextrin are minor carbohydrate carriers that some carnivore-strict feeding philosophies may flag.Because these supplements are made from whole foods, and not chemicals, doses are highly palatable.Daily usability has real strengths and real friction. Strengths: the tablet is small, can be crushed and sprinkled on food, can be suspended in water by oral syringe, and is well tolerated by many cats per practitioner-channel reviews. Whole-food palatability is genuinely above category baseline for cats.Channel restriction means buyers without an existing integrative-vet relationship face a vet-referral or authorized-retailer step before they can begin daily use. Subscribe-and-save with explicit cadence is not surfaced.Standard Process is only available through healthcare professionals.Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing13SPStandard Process Feline Whole Body SupportStandard Process Inc. (Palmyra, WI) · TabletStandard Process Feline Whole Body Support is a veterinary-channel multisystem tablet with a long whole-food formulation heritage. It combines whole-food micronutrient sources, ...Made In USADose Disclosure Limited55.8/100Disclosure Gaps
14Rank55.6/100Disclosure Gaps14RankHGLiquid topperHuggibles Tasty Toppers Senior Vitality Blend Liquid Topper
Huggibles · Liquid topper
Longevity FormulaLiquid topperProprietary Blend55.6/100Disclosure GapsHuggibles Tasty Toppers Senior Vitality Blend is a liquid food topper for dogs and cats with a broad healthy-aging ingredient list. It includes CoQ10, glutathione, MSM, resveratrol, quercetin, turmeric, ginger, spirulina, bromelain, salmon oil, probiotics, and B vitamins. The catch: the product does not disclose per-serving amounts for those actives, and the one-pump-per-20-lb dosing does not translate neatly to the average cat.
Best forOwners who want a salmon-oil-based liquid topper and care more about feeding ease than exact dose transparency.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean 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
- A broad senior topper with CoQ10, glutathione, MSM, resveratrol, quercetin, EPA/DHA, botanicals, probiotics, and B vitamins.
- A pump liquid format designed to mix into food.
- USA manufacturing with cGMP and UL audit language at the manufacturing level.
What's not in it
- Per-pump amounts for the active ingredients.
- A cat-specific dosing system for normal 8–12 lb cats.
- A public lot-level COA, NASC seal, or named third-party testing lab.
Label snapshot · proprietary14-ingredient stack on ProVitae Defense backbone · per-pump mg NOT disclosedCoQ10, Glutathione, MSM, Resveratrol, Quercetin, Ellagic Acid, Salmon Oil (EPA/DHA), B-Complex Blend, Bromelain, Spirulina, Turmeric, Ginger Root, Inositol, Proprietary Probiotic Blend?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe brand fully names the active-ingredient roster (Co-Q-10, Inositol, Glutathione, Salmon Oil with Total Omega-3 / EPA / DHA, Resveratrol, Quercetin, Ellagic Acid, B-Complex Blend, Bromelain, Spirulina, MSM, Turmeric, Ginger Root, Proprietary Probiotic Blend) and discloses serving size (one teaspoon per 20 lb body weight per day, approximately one pump).Lifting toward tier 7-10 would require publishing per-pump milligram values for every named active, breaking the B-Complex Blend into individual B-vitamins (B1, B2, B3, B5, B6, B7, B9, B12), naming the probiotic strains and CFU per pump,…Active ingredients include Co-Q-10, Inositol, Glutathione, Salmon Oil, Total Omega-3, EPA, DHA, Resveratrol, Quercetin, Ellagic Acid, B-Complex blend, Bromelain, Spirulina, MSM, Turmeric, Ginger root, and Proprietary Probiotic Blend.Architecturally this is a multi-active healthy-aging stack rather than a single-active longevity product or a senior multivitamin.Lifting toward 9-10 would require publishing an explicit ingredient-to-pathway map (e.g., CoQ10 to mitochondrial bioenergetics, resveratrol/quercetin to sirtuin/senescence, glutathione to oxidative stress, MSM/turmeric to inflammatory…Formulated with 14 anti-inflammatory and antioxidant ingredients for senior dogs and cats ... selected for pain relief, anti-inflammation, and antioxidant properties.The brand publishes a multi-layer testing description: Near Infrared Spectroscope (NIRS) identity testing on every ingredient lot, triple-tested validation against the supplier Certificate of Analysis for every new ingredient, annual outside-lab re-validation of every ingredient against COA, finished-product microbial testing (Enterobacteriaceae, E.Lifting toward 7-10 would require naming the third-party laboratory used for ingredient and finished-product testing, publishing a per-lot COA lookup tool tied to package codes, surfacing batch-linked verification at the Chewy and brand…Manufactured in FDA registered facilities in the USA following FDA and GMP guidelines ... Yearly audits by Underwriters Laboratories for nutritional supplements cGMP compliance (21 CFR Part 111). FDA and NASC audited facilities with routine third-party independent laboratory testing.Dosing is body-weight-banded — one teaspoon per 20 lb daily, split AM/PM if desired, with a 'do not exceed 10 teaspoons per day' ceiling — and the brand states the formula is appropriate for senior dogs and cats with a 'begin with half the suggested amount and gradually increase' acclimation step.Lifting toward 8-10 would require explicit cat-specific serving guidance below the 20 lb threshold (most adult cats weigh 8-12 lb and would receive less than half a pump), drug-interaction warnings around quercetin / resveratrol / ginger…Give one teaspoon, approximately 1 pump, for every 20 lbs of body weight. Begin with half the suggested amount, and gradually increase to the suggested daily amount. Amounts can be split between AM and PM. Do not exceed 10 teaspoons per day.The architecture is intentional at the brand level — every Huggibles product is built around the same ProVitae Defense antioxidant longevity scaffold (resveratrol, quercetin, ellagic acid, pomegranate extract, inositol, CoQ10, turmeric) with category-specific actives layered on top.Lifting toward 7-10 would require publishing per-active milligram doses so the architecture can be evaluated, naming the constituent fruit extracts and amounts in the ProVitae Defense blend, breaking out the B-Complex and probiotic…Powered by ProVitae Defense, a 100% natural antioxidant longevity blend formulated with clinically supported natural ingredients.The brand uses a mix of category-defensible and category-aggressive claim language. NASC-compatible structure-function language appears (supports vitality, antioxidant defense, anti-inflammatory support, promotes longevity, supports healthy aging).Lifting toward 8-10 would require dropping 'Pain Relief' from the Amazon listing title and product copy (drug-claim language), naming the veterinarian or formulator behind the 'vet recommended' positioning, citing the specific…Huggibles Senior Vitality Tasty Food Toppers for Dogs and Cats – MSM, glutathione, antioxidants, probiotics – Anti-inflammatory, Pain Relief – Vet Recommended.Palatability rationale is explicit and well-suited to dual-species use: the carrier system is built on Norwegian / Wild Alaskan salmon oil, which provides both a high-acceptance flavor for dogs and cats and a functional EPA/DHA contribution.Lifting toward 9-10 would require publishing the full inactive-ingredient list with preservatives and carriers named, disclosing the salmon-oil sourcing (Wild Alaskan vs Norwegian — the brand uses both names across surfaces), publishing a…Made with Norwegian Salmon oil and includes omega-3s, the proprietary probiotic blend, MSM, and B-complex vitamins.Daily-usability is the formula's strongest dimension. The pump-dispenser liquid topper format is among the most practical delivery systems for senior cats: one pump per 20 lb of body weight per day, mixed directly onto wet or dry food at mealtime, with the option to split AM and PM. No pill-fighting, no capsule-cracking, no scoop-and-measure precision required.Lifting to 10 would require explicit storage and shelf-life guidance after opening, a published subscribe-and-save program with cadence disclosure, and species-banded serving guidance for cats under 10 lb (the one-teaspoon-per-20-lb…Easily pump Tasty Toppers onto your cat or dog's food for tastier meals and vet-recommended nutrition.Last reviewed: May 21, 2026Sources: Retailer listing · Product page · Manufacturing page14HGHuggibles Tasty Toppers Senior Vitality Blend Liquid TopperHuggibles · Liquid topper · Core Longevity FormulaHuggibles Tasty Toppers Senior Vitality Blend is a liquid food topper for dogs and cats with a broad healthy-aging ingredient list. It includes CoQ10, glutathione, MSM, resverat...Aging Biology FocusMade In USALow-Dose ConcernDose Disclosure Limited55.6/100Disclosure Gaps
15Rank53.5/100Disclosure Gaps15RankNILiquidNHV Natures Immuno For Cats — Medicinal Mushroom Blend
NHV Natural Pet Products (Vancouver, BC) · Liquid
Related BenchmarkLiquidProprietary Blend53.5/100Disclosure GapsNHV Natures Immuno is a cat liquid built around five medicinal mushrooms. It is relevant to senior-cat wellness because immune balance and antioxidant support matter with age. The catch: the mushrooms are grouped into one total amount, and the product leans heavily into immune and cancer-adjacent language rather than broad longevity support.
Best forOwners who want a mushroom-based liquid for immune support and are comfortable with limited dose detail.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean 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
- Turkey tail, reishi, cordyceps, agaricus, and shiitake in an alcohol-free glycerin and water base.
- A cat-specific liquid with weight-banded dropper dosing.
- Health Canada VHP notification and GMP-certified Vancouver manufacturing language.
What's not in it
- Individual amounts for each mushroom or beta-glucan content.
- A public batch-level COA, named third-party lab, or NASC Quality Seal.
- NAD+ support, CoQ10, joint support, cognitive support, or a broad healthy-aging stack.
Label snapshot · proprietaryProprietary blend · per-mushroom mg NOT disclosed · beta-glucan content NOT disclosedProprietary mushroom blend: Turkey Tail (mycelium), Reishi, Cordyceps, Agaricus, Shiitake — 250 mg total dry equivalent?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsAll five mushroom identities are disclosed by name (Turkey Tail, Reishi, Cordyceps, Agaricus, Shiitake) and the parts used are specified for some (Turkey Tail mycelium; Reishi, Cordyceps, Agaricus, Shiitake fruiting body).Per-mushroom mg disclosure, beta-glucan percentage, and beta-glucan mg per dose are all absent. For a mushroom blend, disclosing beta-glucan content (the bioactive marker) plus per-species mg would lift this from tier 4 toward tier 7-9.Proprietary Blend of Turkey Tails (mycelium) (mushroom), Reishi (mushroom), Cordyceps (mushroom), Agaricus (mushroom), Shiitake (mushroom). Dry herbs total 250mg Dry Equivalent.Architecture is single-pathway by design: five medicinal mushrooms all directed at immune modulation via beta-glucan-mediated mechanisms.Single-class architecture (all mushrooms). Adding distinct NAD+, mitochondrial, cognitive, or joint actives would lift toward tier 7-10.Every 1 mL of NHV Natures Immuno contains a synergistic blend of five functional mushrooms, each with unique and complementary properties that promote immune balance and vitality, and each of these mushrooms is rich in beta-glucans.Brand claims a GMP-certified manufacturing facility in British Columbia, FDA registration for import, USDA Certified Organic raw materials, Canada Organic, BC Certified Organic, Ecocert, and HACCP. Brand also states all raw materials must carry certificates of analysis and that finished products are 'third-party lab' tested after in-house QC.Third-party lab not named, no public finished-product COA, no batch-lookup tool, no NASC seal, no public potency or contaminant report. A named NSF/Eurofins-class lab plus per-lot COA access would lift to tier 7-8.Manufactured in a state-of-the-art facility and subjected to rigorous in-house and third party standards, NHV Natural Pet Products are USDA Certified Organic, FDA Registered, and GMP Certified.Cat-specific SKU exists and is dosed in milliliters via a calibrated dropper rather than a human-scale tablet, which is meaningful for cats.Cat-specific safety nuance is light: weight bands extend to 75+ lb on a cat page, the formulating veterinarian is not named, pregnancy/lactation guidance is not surfaced, and feline-specific drug-interaction notes (e.g.,…Natures Immuno is vet-formulated, made with safe, appropriate medicinal mushroom dosages for pets.Architecture is coherent within its lane: five medicinal mushrooms each mapped to a differentiated role within an immune-and-organ-protective system (Turkey Tail for general immunomodulation and PSP/PSK, Reishi for cardiovascular and adaptogenic immune balance, Cordyceps for antioxidant and energy/liver support, Agaricus for liver and chemotherapy adjunct context, Shiitake…Inter-mushroom ratio inside the proprietary blend is not disclosed. Extraction method (hot-water, dual-extract, alcohol) is not specified, which matters for mushroom polysaccharide bioavailability.Turkey Tails ... Reishi ... Cordyceps ... Agaricus ... Shiitake. Each of these mushrooms is rich in beta-glucans, which are natural compounds that help immune cells recognize and respond appropriately to challenges.The brand cites a peer-reviewed abstract — 'Exploring the Immunomodulatory Potential of Natures Immuno,' Journal of Immunology (2024) — claiming balanced inflammatory markers and increased IL-10 and IFN-γ regulatory cytokines in companion animals. The brand also references the medicinal-mushroom literature (Patel & Goyal 2012) on the cat PDP.Cancer-context, viral-infection, and organ-protection claims sit at the aggressive edge of category-defensible language. The Journal of Immunology citation is an abstract, not a finished-formula randomized controlled trial in cats.Natures Immuno is helpful for cats facing cancer. The medicinal mushrooms found in Natures Immuno are also beneficial for many types of cancer.Excipient profile is minimal and fully enumerated: 50% purified water and 50% vegetable glycerin as the carrier. The brand specifies non-GMO vegetable glycerin and states no added preservatives, artificial flavorings, or artificial color.No published feline palatability study (e.g., a Summit Ridge-class consumption study). The glycerin carrier sweetness is a known cat-acceptance lever but is not foregrounded with feline-specific rationale on the PDP.50% Purified Water, 50% Vegetable Glycerin.Liquid dropper format with twice-daily dosing and food-mix flexibility is workable for most cats. Weight bands are simple to navigate. Brand states a 100 mL bottle is a roughly 3-month supply for small to medium pets, giving a defensible per-day cost (USD $62.95 / ~90 days ≈ $0.70/day at the lowest band).Twice-daily dosing and post-opening refrigeration add modest friction. No published subscription discount or autoship cadence on the PDP.Recommended Use: 0-15 lbs 0.5 mL twice daily ... Mix into food, treats, or administer directly via dropper.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing15NINHV Natures Immuno For Cats — Medicinal Mushroom BlendNHV Natural Pet Products (Vancouver, BC) · LiquidNHV Natures Immuno is a cat liquid built around five medicinal mushrooms. It is relevant to senior-cat wellness because immune balance and antioxidant support matter with age. T...Dose Disclosure Limited53.5/100Disclosure Gaps
16Rank52.2/100Disclosure Gaps16RankLGLiquidPet Wellbeing Life Gold for Cats — Immune, Antioxidant, Detoxification Support
Pet Wellbeing (Boulder, CO) · Liquid
Related BenchmarkLiquidProprietary Blend52.2/100Disclosure GapsPet Wellbeing Life Gold is an herbal liquid for cats centered on immune, antioxidant, and detoxification support. It uses six herbs in an alcohol-free bacon-flavored glycerin liquid and carries NASC-backed brand quality signals. The catch: the formula is tied to cancer-adjacent positioning on several public surfaces, while the product does not disclose individual herb amounts or show a finished-formula feline clinical trial.
Best forOwners who are specifically looking for herbal immune-support drops and will discuss cancer-adjacent use with their veterinarian.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean 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
- Astragalus, blessed thistle, sheep sorrel, burdock, slippery elm, and ginger in a liquid blend.
- Alcohol-free vegetable glycerin carrier with natural bacon flavor.
- NASC Quality Seal at the brand level and HPTLC/HPLC testing language.
What's not in it
- Individual amounts for each herb.
- A public per-lot COA or batch lookup tool.
- A broad longevity formula with NAD+ support, mitochondrial cofactors, cognitive support, or joint support.
Label snapshot · proprietarySix-herb proprietary blend · per-herb mg NOT disclosed · 1:3 dry herb equivalentAstragalus root, Blessed Thistle, Sheep Sorrel, Burdock root, Slippery Elm bark, Ginger — total 312 mg/ml proprietary blend?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsLife Gold discloses an aggregate concentration of 312 mg per ml across all six active herbs and identifies the extract as a 1:3 Dry Herb Equivalent. The six active herbs are named explicitly (Astragalus root, Blessed Thistle herb, Sheep Sorrel herb, Burdock root, Slippery Elm bark, Ginger rhizome).Per-herb mg disclosure is the missing element.Active Ingredients per 1 mL: A Proprietary Blend of: Astragalus root, Blessed Thistle herb, Sheep Sorrel herb, Burdock root, Slippery Elm bark, Ginger rhizome — 312 mg.Life Gold targets two adjacent pathway clusters relevant to healthy aging: immune modulation (astragalus, blessed thistle) and antioxidant / oxidative-stress support (the Essiac-tradition trio of burdock, sheep sorrel, slippery elm, plus blessed thistle) with a secondary detoxification/gut-soothing layer (slippery elm, ginger).Adding distinct actives for cognitive, mitochondrial, NAD+, or joint pathways would lift this toward tier 7-10.Supports vital systems of detoxification... Helps maintain a healthy level of oxidative stress... Supports antioxidant and immune function... Helps promote holistic long-term health.Testing transparency is the strongest evaluable category for Life Gold. The brand site states 'Produced in an FDA-registered facility following FDA 21 CFR Part 111 standards' (human-dietary-supplement cGMP framework, not the lighter pet-supplement framework) and describes per-batch identity and potency testing via HPTLC and HPLC: 'Third-Party Verified: Every batch tested...Naming the third-party lab (NSF/Eurofins/Alkemist class), publishing per-lot COAs, and providing a public batch-lookup tool tied to the bottle ID would lift toward tier 9-10.Produced in an FDA-registered facility following FDA 21 CFR Part 111 standards... Third-Party Verified: Every batch tested... HPTLC and HPLC for 100% identity and potency.Several species-appropriate signals are visible: weight-banded dosing (0.25 ml under 10 lb, 0.5 ml over 10 lb), alcohol-free vegetable-glycerin carrier (alcohol tinctures are a known feline-toxicity hazard, so the alcohol-free choice is the right species-aware decision), bacon flavoring suited to obligate-carnivore palatability, and explicit drug-interaction precautions: 'Use…Cat-specific reformulation (rather than identical dog/cat blend with rescaled serving size), explicit feline hepatic-metabolism context, and pregnancy/lactation guidance are absent.Use caution if administering with immune-suppressing drugs. Administer at least one hour away from drugs.The architecture is a coherent heritage herbal blend — three of the six herbs (burdock, sheep sorrel, slippery elm) come directly from the 1922 Essiac formula, with astragalus and blessed thistle layered in for additional immune and bitter-tonic support and ginger for digestive comfort. Within the Essiac-inspired herbal tradition this is an intelligible formulation choice.Lifting toward tier 7-10 would require either (a) explicit healthy-aging architecture mapping each herb to a distinct longevity pathway with mg disclosure or (b) restructuring the SKU as a cat-specific aging formula rather than an…A proprietary formula expertly developed by holistic veterinarians to support your cat's healthy immune system and antioxidant balance for overall well-being.Evidence quality and claim discipline is the weakest category for Life Gold and the primary reason this product cannot be scored as a disciplined longevity formula. The on-label brand-PDP claim register is compliant ('Supports vital systems of detoxification... Helps maintain a healthy level of oxidative stress...Retiring the cancer-adjacent positioning across blog, retail SKU titles, and video assets — and restricting the claim register to immune/antioxidant/detoxification language with cited mechanistic evidence — would lift toward tier 7-10.Helps manage the symptoms of feline cancer... Natural products can be a helpful addition to your veterinarians treatment plan, to help strengthen your cat's immune system, and the natural ability to fight cancerous cells!Excipient profile is short, fully enumerated, and species-appropriate: deionized water (solvent), vegetable glycerin (alcohol-free preservative and carrier — the right species choice because alcohol tinctures pose a feline toxicity risk), and natural bacon flavor (high-acceptance flavor for obligate-carnivore palatability).Naming the bacon-flavor system origin and disclosing a feline palatability or consumption study would lift to tier 9-10.Inactive Ingredients: Deionized water, natural bacon flavor, vegetable glycerin.Daily-use design is reasonable but not best-in-class. The dropper-bottle format with weight-banded dosing (0.25 ml twice daily under 10 lb, 0.5 ml twice daily over 10 lb) is intelligible. The 2 oz bottle is positioned as a 4-month supply and the 4 oz as an 8-month supply, supporting long-horizon supplementation cadence.Single daily-dose reformulation, a pre-measured-dose format, or a sprinkle-on-food alternative would lift toward tier 9-10. Twice-daily liquid dosing in cats remains a material compliance ceiling for the format.Administer product twice daily. Can be given during or after mealtime. 10 lb and under: 0.25 ml, twice daily. Over 10 lb: 0.5 ml, twice daily.Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing16LGPet Wellbeing Life Gold for Cats — Immune, Antioxidant, Detoxification SupportPet Wellbeing (Boulder, CO) · LiquidPet Wellbeing Life Gold is an herbal liquid for cats centered on immune, antioxidant, and detoxification support. It uses six herbs in an alcohol-free bacon-flavored glycerin li...NASC Quality SealMade In USADose Disclosure Limited52.2/100Disclosure Gaps
17Rank51.5/100Disclosure Gaps17RankKMRPowderPetAg KMR Healthy Aging Powder for Adult & Senior Cats
Pet-Ag, Inc. (Hampshire, IL) · Powder
Longevity FormulaPowder51.5/100Disclosure GapsPetAg KMR Healthy Aging is a milk-based powder for adult and senior cats 7+. It is positioned around senior nutrition, heart and muscle support, joints, immunity, and skin and coat, with taurine and omega sources included. The catch: it does not show per-serving amounts for the key actives, and the ingredient list feels more like a fortified nutrition powder than a modern longevity supplement.
Best forOwners who want a senior-cat nutritional powder from a long-established animal nutrition company.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean 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.
Narrower Support Scope
The product appears focused on a specific wellness area rather than broad aging-biology coverage across multiple longevity-relevant systems.
What's in it
- A milk-protein base with taurine, marine microalgae oil, vitamins, minerals, and omega fatty acids.
- Flexible use as a dry topper, reconstituted liquid, or milk-style snack.
- Made by Pet-Ag, a long-running Illinois animal nutrition company.
What's not in it
- Per-serving amounts for taurine, DHA/EPA, B vitamins, or other key actives.
- NASC Quality Seal, public COA lookup, or named third-party testing lab.
- A clean modern excipient profile; the file notes BHA/BHT, maltodextrin, and artificial flavoring.
Label snapshotMulti-component fortified milk powder · per-serving mg on named actives NOT disclosedMarine microalgae oil (omega-3), taurine, vitamin E (30 IU/kg min), full vitamin/mineral premix; milk-protein base?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsFull ingredient list is disclosed in conventional pet-food descending-weight order with no proprietary blend, which is meaningful transparency at the ingredient-identity layer.No per-teaspoon or per-reconstituted-serving mg disclosure for taurine, marine microalgae oil EPA/DHA, B-vitamins, or biotin.Crude Protein (min) 34%; Crude Fat (min) 11%; Crude Fiber (max) 1.0%; Moisture (max) 8.0%; Vitamin E (min) 30 IU/kg; Omega-3 Fatty Acids (min) 0.2%; Omega-6 Fatty Acids (min) 1.50%.Brand maps the formula to four claimed pathways: heart and muscle support (high-quality milk protein), joint mobility (omega-3 from marine microalgae oil), immune function (vitamin E), and skin and coat (omega-6).No NAD+ precursor, no mitochondrial cofactor, no senolytic, no cognitive or polyphenol active. The pathways claimed are a subset of the rubric's healthy-aging map and lean on basic nutritional fortification.Supports a Healthy Heart and Muscles with High-Quality Protein; Supports Joint Health & Mobility with Omega 3; Supports a Healthy Immune System with Vitamin E; Supports Healthy Skin & Coat with Omega 6 fatty acids.No NASC Quality Seal is displayed on the brand product page, About page, or the retail listings examined. No specific third-party laboratory is named. No public Certificate of Analysis program is surfaced. No lot-level batch lookup tool is provided to buyers. No cGMP attestation language is published on the product surface.Adopting the NASC Quality Seal, naming a third-party lab (NSF, Eurofins, or equivalent), and publishing a lot-level COA accessible at the SKU level would lift testing transparency from tier 4 to tier 7-8.Proudly 100% employee-owned and based in Hampshire, Illinois, PetAg has delivered uncompromising quality since 1930.Several species-appropriate signals are explicit. The product is cat-specific, age-specific (7+), and the active stack includes taurine — a feline-essential amino acid that should be present in any cat formula.No explicit lactose-sensitivity guidance for cats that do not tolerate dairy carriers, and no rationale published for the inclusion of BHA/BHT on the animal-fat component when many senior-cat supplements use mixed tocopherols throughout.Designed for Adult and Senior Cats to support their overall health and wellness... Product should not exceed 10% of your pet's daily caloric intake... Consult your veterinarian for additional advice. This product is intended for intermittent or supplemental feeding only.The architecture is a fortified milk-protein powder with a layered vitamin/mineral premix, marine microalgae oil as an omega-3 carrier, taurine, and a flavor and preservation system (animal fat with BHA/BHT, vegetable oil with tocopherols and ascorbyl palmitate, rosemary extract, citric acid, natural and artificial flavor).No published formulation rationale tying each active to a specific aging-related pathway. Publishing a role-by-role active map, removing decorative excipients, and disclosing per-serving mg for the named actives would lift toward tier 7.Beef broth, dried skimmed milk, dried whole milk, dried milk protein, marine microalgae oil, taurine, vitamin E supplement, vitamin A supplement, biotin, niacin supplement, calcium pantothenate, thiamine hydrochloride, pyridoxine hydrochloride, riboflavin supplement, vitamin D3 supplement, vitamin B12 supplement... rice flour, maltodextrin, animal fat (preserved BHA and BHT)...Claim discipline is one of the stronger criteria for this product.Adding a published senior-cat palatability or acceptance study, or citing the established literature on feline taurine and dietary omega-3, would lift claim quality from category-conservative tier 7 toward tier 9.Supports a Healthy Heart and Muscles with High-Quality Protein... Supports Joint Health & Mobility with Omega 3... Supports a Healthy Immune System with Vitamin E... Supports Healthy Skin & Coat with Omega 6 fatty acids.Excipient transparency is high in the sense that every ingredient is disclosed by identity — there is no proprietary blend hiding carriers or flavors.Moving the animal fat from BHA/BHT preservation to mixed tocopherols, reducing or removing artificial flavor from a senior-cat healthy-aging SKU, and naming the rationale for maltodextrin would lift excipient quality from tier 4 toward…Inactive Ingredients: Rice flour, maltodextrin, animal fat (preserved BHA and BHT), cream, vegetable oil (preserved with tocopherols and ascorbyl palmitate)... natural and artificial flavor...Daily usability is the product's strongest criterion. The owner has three serving modes — dry sprinkle on food, mixed with warm water as a milk-style softener, or served as a standalone liquid snack — which is unusually flexible across senior-cat appetite patterns. The 'mix 1 part powder into 2 parts warm water' instruction is simple to memorize.No pre-measured sachet format, no subscription program surfaced on the brand site, and a single pack size. Adding a small daily-measure scoop standard or a subscription cadence would lift toward tier 9-10.KMR Healthy Aging powder can be sprinkled dry on top of your cat's food, mixed with water to soften food or be served separately as a liquid snack... Mix 1 part KMR Healthy Aging powder into 2 parts warm water... Refrigerate reconstituted liquid for up to 24 hours.Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing17KMRPetAg KMR Healthy Aging Powder for Adult & Senior CatsPet-Ag, Inc. (Hampshire, IL) · Powder · Core Longevity FormulaPetAg KMR Healthy Aging is a milk-based powder for adult and senior cats 7+. It is positioned around senior nutrition, heart and muscle support, joints, immunity, and skin and c...Aging Biology FocusMade In USADose Disclosure LimitedNarrower Support Scope51.5/100Disclosure Gaps
18Rank51.3/100Disclosure Gaps18RankRFCapsuleResvantage Feline — Resveratrol Longevity Supplement for Cats
Advantage Biosciences (Costa Mesa, CA) · Capsule
Longevity FormulaCapsule51.3/100Disclosure GapsResvantage Feline is a cat-specific capsule built around resveratrol, a well-known healthy-aging polyphenol. It clearly lists resveratrol 3 mg, kelp 50 mg, flaxseed oil 100 mg, lecithin 50 mg, and taurine 50 mg per capsule. The catch: it is still a narrow resveratrol-led formula, and the capsule format can be awkward for cats.
Best forOwners who specifically want a feline resveratrol supplement and care about seeing the active amounts.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaNASC Quality Seal Clinical Evidence Published Made In USAWorth NotingNarrower Support Scope
The product appears focused on a specific wellness area rather than broad aging-biology coverage across multiple longevity-relevant systems.
What's in it
- Trans-resveratrol 3 mg, Atlantic kelp 50 mg, flaxseed oil 100 mg, lecithin 50 mg, and taurine 50 mg per capsule.
- A dedicated feline SKU rather than a dog product scaled down for cats.
- Direct-to-consumer availability with autoship and veterinary-retailer distribution.
What's not in it
- NAD+ support, CoQ10, cognitive actives, immune support, or broad mitochondrial coverage.
- A public lot-level COA, NASC Quality Seal, or named third-party lab.
- An easy chew, powder sachet, or liquid format for cats who reject capsules.
Label snapshotFull per-capsule mg disclosure · resveratrol-anchored monotherapyResveratrol-trans 3 mg, Atlantic Kelp 50 mg, Flaxseed Oil 100 mg, Lecithin 50 mg, Taurine 50 mg?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsEvery active ingredient in the formula is disclosed with an explicit per-capsule milligram value on the brand storefront product detail page: Resveratrol-trans 3 mg, Atlantic Kelp 50 mg, Flaxseed Oil 100 mg, Lecithin 50 mg, Taurine 50 mg. The brand ingredients page restates the 3 mg resveratrol dose and names the botanical source (Polygonum cuspidatum).Full active-dose disclosure is in place across multiple surfaces, but the formula is not labeled with a formal Supplement Facts panel image and lecithin source (soy vs sunflower) is not specified.Resveratrol-trans 3 mg ... Atlantic Kelp 50 mg ... Flaxseed Oil 100 mg ... Lecithin 50 mg ... Taurine 50 mgThe formula is anchored almost entirely on a single longevity active — 3 mg trans-resveratrol — supported by a small nutritional matrix (Atlantic kelp for trace minerals, flaxseed oil for plant-based omega-3, lecithin for membrane phospholipids, taurine as a feline-essential amino acid).Pathway claims hang off one ingredient (resveratrol) with three supportive nutrients.Scientists have found Resveratrol slows down the aging process.Brand asserts cGMP manufacturing and 'lab tested during all phases' for heavy metals and microbiological contaminants. The Capsugel / Pfizer Licaps encapsulation partnership is named for the oxygen-free, nitrogen-rich filling step. However, no specific third-party laboratory is named on the brand storefront, ingredients page, corporate index, or retailer listings reviewed.Third-party lab not named, no public per-lot COA, no batch-lookup tool, no NASC seal. The Capsugel / Pfizer Licaps reference is an encapsulation-partner credential, not a finished-product testing credential.Manufactured to cGMP standards and a rigorous quality assurance program ... lab tested during all phases of the process insuring that the active compounds are free of heavy metal toxicity and microbiological contaminants.The product is dedicated to cats with a distinct feline SKU (not a re-labeled canine pill) and dosing is calibrated to the species: 3 mg resveratrol per capsule, one capsule daily, which falls well below the mg/kg ceilings discussed in the broader feline resveratrol literature.Pregnancy / lactation guidance, body-weight banding, kitten exclusion language, and an explicit veterinary-consult statement for cats with diabetes or on blood-thinning medications are not surfaced on the public brand pages reviewed.Give cats 1 capsule daily. If giving more than one capsule daily, divide between AM and PM.Architecture is deliberately minimal: one longevity active (resveratrol) plus four supporting nutrients chosen to round out a daily wellness capsule — Atlantic kelp (trace minerals / iodine), flaxseed oil (plant omega-3 / ALA), lecithin (membrane phospholipids / palatability carrier), and taurine (feline-essential amino acid).Architecture is single-active by design with a small supportive matrix and no published ingredient-role map.Resveratrol-trans 3 mg ... Atlantic Kelp 50 mg ... Flaxseed Oil 100 mg ... Lecithin 50 mg ... Taurine 50 mgThe underlying resveratrol mechanism literature is substantial and the brand cites PubMed Central, NIH Public Access articles, and a Public Library of Science One study on low-dose resveratrol gene expression — appropriate reference quality for mechanism context. However, the brand's customer-facing register stretches well beyond responsibly qualified language.No Resvantage-Feline-specific finished-formula clinical trial published at review. Lifespan and anti-aging claims sit at the aggressive end of category-defensible language for a 3 mg resveratrol cat supplement.Improve the quality of your cat's life and keep your cat from acting old before his or her time.Excipient list is short and fully enumerated: a gelatin capsule shell filled in an oxygen-free, nitrogen-rich Capsugel Licaps process, with the actives suspended in flaxseed oil and lecithin as the carrier base. There is no proprietary 'flavor system,' no propylene glycol, no glycerin, and no obviously contraindicated excipients are listed.Liquid-filled capsule format is challenging for many cats; the brand does not publish a palatability study and does not specify lecithin source (soy vs sunflower) or fish-oil species for allergen-sensitive cats.Some customers have been unable to open these capsules at all and reported they make a sticky mess trying, and they are on the larger side.Format is a liquid-filled gelatin capsule taken once daily, with a 30-capsule carton sized for a one-month supply and autoship options at the brand storefront and Farmvet (cadence from weekly to annually). Single-capsule dosing simplifies the math.Capsule format is the primary daily-usability constraint. Adding a chewable, sprinkle, or oil-dropper format and offering weight-banded dose strengths would meaningfully lift daily-usability toward tier 7-9.Give 1 3mg capsule daily.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing · Peer-reviewed study18RFResvantage Feline — Resveratrol Longevity Supplement for CatsAdvantage Biosciences (Costa Mesa, CA) · Capsule · Core Longevity FormulaResvantage Feline is a cat-specific capsule built around resveratrol, a well-known healthy-aging polyphenol. It clearly lists resveratrol 3 mg, kelp 50 mg, flaxseed oil 100 mg, ...Aging Biology FocusEvery Dose DisclosedMade In USANarrower Support Scope51.3/100Disclosure Gaps
19Rank50.9/100Disclosure Gaps19RankPALiquidPetAlive Brain Health for Senior Cats — Natural Herbal Liquid Drops
PetAlive — a brand of Native Remedies, distributed by Silver Star Brands, Inc. (Oshkosh, Wisconsin). Brand claims manufacturing in FDA-registered, cGMP-compliant facilities in the USA. · Liquid
Related BenchmarkLiquid50.9/100Disclosure GapsPetAlive Brain Health for Senior Cats is a liquid drop formula focused on cognitive aging. It uses five certified-organic botanicals in an alcohol-free glycerin and water base, with dosing designed for wet food. The catch: it does not disclose per-botanical amounts, and it is a narrow brain-support product rather than a broad longevity formula.
Best forOwners who want a simple herbal liquid for senior-cat brain support and prefer drops over pills.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean 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
- Spirulina, green tea, oatstraw, fo ti, and amalaki in a vegetable glycerin and water base.
- A senior-cat-specific dropper format mixed into wet food twice daily.
- Alcohol-free, xylitol-free, propylene-glycol-free, and preservative-free carrier choices.
What's not in it
- Per-botanical milligram amounts or extraction-strength details.
- A public lot-level COA, NASC Quality Seal, or named third-party testing lab.
- NAD+ support, CoQ10, immune support, joint support, or broad healthy-aging coverage.
Label snapshotHerbal glycerite · per-botanical mg NOT disclosed · 2-4 drops twice dailySpirulina extract, Green Tea leaf, Oatstraw, Polygonum multiflorum (Fo ti) stem, Amalaki fruit — all certified organic?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsThe label fully enumerates the five botanical actives by identity — Certified Organic Spirulina extract, Certified Organic Green Tea leaf, Certified Organic Oatstraw, Certified Organic Polygonum multiflorum (Fo ti) stem, and Certified Organic Amalaki fruit — plus the carrier system (Vegetable Glycerin and Deionized Water).No per-botanical milligrams, no herb-strength ratio, no per-drop or per-serving active solids weight.Brain Health for Senior Cats is a 100% natural herbal formula that contains the following certified organic ingredients in therapeutic dosage: Certified Organic Spirulina extract, Certified Organic Green Tea leaf, Certified Organic Oatstraw, Certified Organic Polygonum multiflorum stem, Certified Organic Amalaki fruit.The formula is single-pathway by design — every claim and every ingredient maps to cognitive aging in senior cats: 'support circulation to the brain,' 'oxygen and nutrients,' 'normal alertness,' 'good memory,' and 'skills retention.' Green Tea leaf and Amalaki fruit provide polyphenolic antioxidant activity that overlaps with oxidative-stress support, and Spirulina…Pathway claims do not extend beyond cognitive support and adjacent antioxidant activity.Brain Health for Senior Cats is an herbal remedy specially formulated to support brain health in elderly cats... selected ingredients to support circulation to the brain, to maintain a healthy supply of oxygen and nutrients needed to promote normal alertness and good memory, as well as skills retention.Brand assertions stop at 'manufactured in FDA-registered, cGMP-compliant facilities' and a generic 'highest pharmaceutical standards' phrase. No third-party laboratory is named on the brand site or on any retailer surface. No public Certificate of Analysis program is referenced. No lot-level batch-lookup tool is provided to buyers. No NASC Quality Seal is displayed.No named third-party lab, no public per-lot COA, no batch-lookup tool, no NASC seal, and a documented prior microbial-contamination recall in the brand family.All PetAlive products are made in FDA-registered, cGMP-compliant facilities according to the highest pharmaceutical standards, guaranteeing the highest degree of consistency, reliability, and potency.The product is built for cats rather than transferred from a human supplement: drop-count dosing is small (2-4 drops, twice daily), the carrier is alcohol-free vegetable glycerin and deionized water (avoiding ethanol tinctures inappropriate for feline metabolism), and the delivery format — drops mixed into wet food — accommodates the well-known feline difficulty with tablets.Public surfaces lack explicit feline-specific cautions for Green Tea (caffeine sensitivity in cats) and Polygonum multiflorum (hepatic concerns), and there is no published pre-existing-condition or drug-interaction guidance.Dosage: 2-4 drops, administered 2 times daily. Drops may be mixed with a small amount of water or food.The architecture is internally coherent for its single declared purpose: Green Tea leaf and Amalaki fruit deliver polyphenolic antioxidant load, Polygonum multiflorum (Fo ti) is a traditional Chinese tonic used historically for graceful aging, Oatstraw is a nervine tonic, and Spirulina contributes micronutrient density.Architecture is single-purpose and internally legible but narrow. Integrating the herbal and homeopathic strategies into a single product, or extending the role map across additional aging pathways, would lift toward tier 7-10.The addition of tonic herbs such as oatstraw and spirulina provide additional benefits to your cat's nervous system and overall health.Claim discipline is mixed but mostly stays inside structure/function language. The brand consistently uses qualified phrasing — 'supports circulation,' 'helps to maintain,' 'promotes normal alertness,' 'good memory,' 'skills retention' — rather than disease-treatment, lifespan-extension, or cure language for the herbal SKU itself.No finished-formula clinical trial published, no peer-reviewed citations linked on PDP, no quantitative substantiation behind 'therapeutic dosage,' and adjacent companion-SKU copy reaches into symptom-reduction language.Brain Health for Senior Cats... supports circulation to the brain to maintain a healthy supply of oxygen and nutrients needed to promote normal alertness and good memory, as well as skills retention.Excipient profile is short, fully enumerated, and species-appropriate: Vegetable Glycerin (sweet, palatable, alcohol-free) and Deionized Water.No published palatability study and no allergen guidance disclosure. Adding a third-party palatability study and explicit allergen-language statements would lift to tier 9-10.Inactive ingredients: Vegetable Glycerin and Deionized Water.Daily-use design is built around the realities of dosing senior cats. The drops-into-food format sidesteps pill refusal entirely. Twice-daily dosing fits the standard two-meal feline routine. The 2 fl. oz. amber-bottle dropper is shelf-stable and the alcohol-free glycerin carrier supports a reasonable open-bottle window.Owner-judgment dose window (2-4 drops) is wider than a precision-dosed product would specify, twice-daily cadence adds friction versus once-daily competitors, and storage guidance is not explicit on retailer surfaces.Dosage: 2-4 drops, administered 2 times daily. Drops may be mixed with a small amount of water or food.Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing19PAPetAlive Brain Health for Senior Cats — Natural Herbal Liquid DropsPetAlive — a brand of Native Remedies, distributed by Silver Star Brands, Inc. (Oshkosh, Wisconsin). Brand claims manufacturing in FDA-registered, cGMP-compliant facilities in the USA. · LiquidPetAlive Brain Health for Senior Cats is a liquid drop formula focused on cognitive aging. It uses five certified-organic botanicals in an alcohol-free glycerin and water base, ...Made In USADose Disclosure Limited50.9/100Disclosure Gaps
20Rank49.9/100Sparse Public Evidence20RankMELiquidNHV Multi Essentials for Cats — Herbal Liquid Multivitamin
NHV Natural Pet Products (Vancouver, BC) · Liquid
Related BenchmarkLiquidProprietary Blend49.9/100Sparse Public EvidenceNHV Multi Essentials is an herbal liquid multivitamin for cats, aimed at daily vitality and filling diet gaps. It uses 11 herbs in a clean glycerin-and-water base and keeps the claims fairly restrained. The catch: the herbs are grouped into one total amount, so buyers cannot see how much of each ingredient their cat actually receives.
Best forOwners who want a gentle herbal liquid multivitamin and are comfortable with twice-daily dropper dosing.
Aging Biology Focus Every Dose DisclosedSystems ApproachClean 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
- Alfalfa, oat, dandelion, kelp, parsley, marshmallow, chickweed, nettle, yucca, Asian ginseng, and Oregon grape.
- A 50% purified water and 50% vegetable glycerin carrier with no artificial flavoring listed.
- GMP-certified Canadian manufacturing and organic/HACCP/Ecocert sourcing credentials at the brand level.
What's not in it
- Individual amounts for each of the 11 herbs.
- NAD+ support, CoQ10, PQQ, senolytic-style ingredients, or a dedicated cellular-aging formula.
- A public batch-level COA, NASC Quality Seal, named testing lab, or low-friction once-daily format.
Label snapshot · proprietaryProprietary herbal blend · per-herb mg NOT disclosed11-herb proprietary blend (Alfalfa, Oat, Dandelion, Kelp, Parsley, Marshmallow, Chickweed, Stinging Nettle, Yucca, Asian Ginseng, Oregon Grape) at 163 mg combined dry equivalent per dose?Why this scoretap any criterion for evidence— —Why this scoreWhat's missingBrand's own wordsMulti Essentials uses a proprietary herbal blend with no per-herb mg disclosure. Eleven herbs (Alfalfa, Oat, Dandelion, Kelp, Parsley, Marshmallow, Chickweed, Stinging Nettle, Yucca, Asian Ginseng, Oregon Grape) are named with the part used, but the only quantitative figure surfaced is a combined 'Dry herbs total 163 mg Dry Equivalent' per dose.No individual per-herb mg disclosure. The label discloses identity and a combined dry-equivalent figure but groups all 11 herbs under one number.Dry herbs total 163mg Dry EquivalentPathway claims are nutritive and broad rather than mapped to healthy-aging biology. The brand positions Multi Essentials around filling dietary gaps, supporting digestion, supporting bone and muscle growth, boosting energy, reducing lethargy, and promoting skin and coat.Pathway claims read as 'vitamins and minerals from herbs' rather than as NAD+, mitochondrial, oxidative-stress, immune, or cellular-resilience pathways.Helps to fill dietary gaps. Especially useful for senior cats, or cats with injuries or illness.NHV asserts manufacturing at a GMP-certified Canadian facility, requires supplier certificates of analysis for raw materials, runs in-house quality control, and states that finished batches are 'tested a second time by a third-party lab.' These claims are credible at the brand-process level, but no specific third-party lab is named on the brand or retail surfaces examined, no…Third-party lab not named, no public per-lot COA, no batch-lookup tool, and no NASC Quality Seal. A named lab (NSF, Eurofins, or equivalent) plus public batch COAs accessible from each PDP would move this toward tier 7-8.Manufactured at a GMP state-of-the-art facility... new batches of supplements are tested by a third-party lab.Safety logic is generally responsible for a herbal supplement.Cat-specific botanical safety language (around Oregon Grape berberine, Asian Ginseng, and yucca saponins in feline metabolism) and condition-specific guidance for hyperthyroid, CKD, or diabetic cats is not surfaced on the PDP examined.Do not use Multi Essentials in pregnant or nursing animals.The architecture is a traditional herbal multivitamin assembly: 11 herbs grouped by their general vitamin and mineral content, plus a water-glycerin carrier. The brand explains each herb's role only at the level of 'rich in vitamins A, B, C, D, E, K' or 'antioxidant herb,' without mapping ingredients to distinct healthy-aging roles.Architecture overlaps heavily across herbs (multiple nutritive herbs cover similar vitamin/mineral profiles) and does not segment ingredients by aging-related role.Multi Essentials is a vet-formulated herbal multivitamin specifically designed for a pet's body, formulated to support your pet's immune system and fill nutritional gaps.Claim discipline is comparatively restrained for the herbal-supplement category. The PDP avoids lifespan-extension, anti-aging, cure, or disease-treatment language. Claims center on filling dietary gaps, boosting energy, reducing lethargy, promoting skin and coat, and supporting digestion — supportive nutritional framing rather than aggressive longevity marketing.No finished-formula peer-reviewed feline trial on Multi Essentials, and individual herb claims (anti-inflammatory, antimicrobial, antioxidant) are not citation-linked on the PDP.Helps boost energy levels and reduces lethargy in cats. Helps promote a healthy skin and coat.Excipient profile is short and disclosed: 50% purified water and 50% vegetable glycerin as the carrier system. No artificial flavoring, no propylene glycol, no xylitol, no synthetic preservatives, and no artificial coloring are present. Vegetable glycerin is a familiar, cat-tolerated carrier with mild sweetness that aids palatability when drops are mixed into wet food.No published cat-specific palatability study, and no explicit guidance for cats that refuse glycerin-based herbal tinctures.50% Purified Water, 50% Vegetable Glycerin.Daily usability has real friction for a cat-owner audience. Dosing is liquid-dropper based, twice daily, with a weight-banded chart that defaults to 0.5 ml twice daily for cats in the 0-15 lb range.Twice-daily dropper dosing with required refrigeration and shake-before-use creates daily friction relative to once-daily chews, sachets, or food toppers.Shake well before use. The easiest method is to use the dropper provided and place the drops into your pet's food or favorite treat... Shelf life after opening is 6 months and must be refrigerated after opening.Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing20MENHV Multi Essentials for Cats — Herbal Liquid MultivitaminNHV Natural Pet Products (Vancouver, BC) · LiquidNHV Multi Essentials is an herbal liquid multivitamin for cats, aimed at daily vitality and filling diet gaps. It uses 11 herbs in a clean glycerin-and-water base and keeps the ...Dose Disclosure Limited49.9/100Sparse Public Evidence
How we scored 21 cat longevity supplements.
About this ranking.
Each product was scored against the same eight criteria: dose disclosure, longevity-pathway coverage, batch testing, species-appropriate safety, formulation logic, claim discipline, ingredient and flavor quality, 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 senior cat supplement is built for longevity. Some mainly support visible senior needs such as joints, coat, digestion, energy, or cognition. A smaller group is built around the biological systems that change with age — NAD+ metabolism, mitochondrial function, oxidative stress defense, immune balance, and cellular resilience. We mark those products with the Aging Biology Focus badge.
La Petite Labs makes Hollywood Elixir, which is shown as a separate publisher benchmark and excluded from the numbered competitive ranking. Hollywood Elixir is formulated for both cats and dogs under weight-banded dosing. 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.
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.
cat-longevity-scoring-dataset-2026.jsonReviewed21
Ranked20
Criteria8
Evidence sources137
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Frequently Asked Questions
How were the cat longevity supplements scored?
Each product was scored under a published 100-point rubric across eight criteria, including aging-biology relevance, formulation breadth, dose disclosure, quality verification, public substantiation, species appropriateness, usability, and transparency.
Does La Petite Labs make a product shown on this page?
Yes. La Petite Labs publishes this report and makes Hollywood Elixir. To avoid ranking its own product against competitors, Hollywood Elixir is scored under the same rubric but shown separately as a publisher benchmark rather than included in the numbered ranking.
How did Hollywood Elixir score?
Hollywood Elixir scored 93.2/100 under this rubric. Its strengths and limitations are shown in the publisher spotlight, including the main roadmap item: more finished-formula evidence in cats, where category-wide clinical data remains especially sparse.
Why is Hollywood Elixir 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 focused on aging biology, less dose-transparent, or supported by fewer public quality signals. Some lower-scoring products may still be useful for specific needs.
What does Aging Biology Focus mean?
Aging Biology Focus means the product is positioned around mechanisms relevant to healthy aging, such as NAD+ metabolism, mitochondrial support, oxidative stress, immune balance, cellular resilience, or multi-system longevity support.
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 is cat-specific clinical evidence so sparse?
Finished-formula clinical trials in cats are uncommon across the entire pet supplement industry. Most ingredient-level research cited by brands was conducted in humans, mice, dolphins, or dogs. La Petite Labs notes this gap, scores brands against the same standard regardless of species, and avoids assuming that ingredient-level evidence from one species translates one-to-one to cats.
