Cat longevity buying guide · Updated October 25, 2026

Best Cat Longevity Supplements: Choosing a Daily Formula

A daily healthy-aging routine should have a clear purpose. Compare what the formulas contribute, how they fit mealtime and what the evidence means for cats.

As Seen On

Our recommendation for daily cellular-aging nutrition is Hollywood Elixir® Longevity System. Its 17-active NAD+ longevity system combines NR with ingredients selected for cellular energy, antioxidant defense and immune support, in powder sachets for adult and senior cats and dogs.

The appeal is a healthy-aging formula already brought together for the meal you serve every day. This guide explains the design and compares it with other products sold for daily or longevity support.

Explore Hollywood Elixir®

See current price and serving options

La Petite Labs makes Hollywood Elixir and publishes this guide. The selected comparisons use current labels and manufacturer information. They are not hands-on feeding trials or an independent clinical ranking. The earlier scored report is available below with its original review dates.

What makes a longevity formula different from a senior multivitamin?

A senior multivitamin supplies additional nutrients. A product for a particular joint, digestive or heart concern has a more specific job. A longevity formula is designed around processes involved in aging, such as cellular-energy production and antioxidant defense. Those different intentions explain why products in the same search results can have very different ingredient lists.

For a cat already eating complete and balanced food, an additional formula should have a purpose beyond supplying more of every vitamin. Hollywood Elixir's purpose is daily cellular-aging nutrition. For a specific age-related concern, our senior-cat supplement guide helps distinguish that routine from targeted support. Nutrition sources

Why NR, CoQ10 and antioxidants belong in the same formula

Food contains energy, but cells must convert it into a form they can use. NAD+ helps carry electrons during that work; the resulting reactions help produce ATP, which powers much of a cell's activity. NR is one starting material cells can use to make NAD+. NAD+ research

CoQ10 has another job: carrying electrons within the mitochondrial energy-producing machinery. Antioxidant defenses work alongside normal metabolism. Glutathione, for example, helps an enzyme break down hydrogen peroxide, a reactive molecule. Supplying an NAD+ precursor and considering antioxidant nutrition therefore address different parts of the same cellular picture.

Hollywood Elixir builds that idea into a complete daily formula. NR and niacin provide NAD+ starting materials. CoQ10 and B vitamins bring other energy-related nutrients into the design. Glutathione joins astaxanthin, vitamins C and E, resveratrol, quercetin and blueberry powder in the antioxidant group. Beta-glucans and reishi are selected for immune support, with spirulina and whey protein isolate also included.

That combination is the reason to choose the prepared formula: cellular-energy, antioxidant and immune-support nutrition in one daily powder, with the ingredient amounts available to inspect. The NADome guide explains how cells make, use and recycle NAD+ if you want the deeper biology.

Compare the nutritional design, then the daily routine

PetDomain Longevity Complex

The soft-chew version lists taurine, NR tartrate, quercetin, curcumin, green-tea compounds, resveratrol and astaxanthin, with separate cat directions. It shares Hollywood Elixir's interest in NAD+ and antioxidant ingredients. PetDomain also offers a powder; the label compared here is the soft chew.

The formula difference: that active panel does not list CoQ10 or glutathione. Hollywood Elixir includes both, bringing mitochondrial electron transfer and glutathione-based antioxidant nutrition alongside NR in the same formula. Its food-mixed sachets also give you a different routine from the compared half-chew serving.

Explore Hollywood Elixir®

Life Extension Cat Mix

Cat Mix combines vitamins, taurine, arginine, antioxidants and probiotics in a scoop-measured powder. It is a multinutrient addition to food, with a different ingredient emphasis from a formula built around NR.

For an NAD+ longevity routine: its panel lists niacin but does not list NR, CoQ10 or glutathione. Hollywood Elixir includes all three within its cellular-energy and antioxidant design, making it our recommendation when that is the nutritional purpose you want.

See Hollywood Elixir® and serving options

Selected product-label sources

What does the evidence establish for cats?

The sources reviewed for this guide do not establish that any of these finished formulas extends cats' lives. That includes Hollywood Elixir. The useful case today concerns the ingredients, their biological roles, the quality information available and how the formula fits the individual cat.

Feline research is still relevant when its question is kept clear. A study of 83 cats with and without hypertrophic cardiomyopathy found differences in energy-related and glutathione-related metabolism. The researchers measured blood metabolites; they did not give the cats NR or test a longevity supplement. It helps explain scientific interest in these processes, while leaving the supplement question open. Read the feline study

A label tells you what is declared in a product. A laboratory report can document the specific batch tests performed. A controlled feeding trial can test a defined health or function outcome. None of those should be presented as a lifespan result unless lifespan was actually studied. This distinction lets you appreciate a formula's purpose without buying a promise of extra years.

Choose a routine your cat can keep

Hollywood Elixir is intended for adult and senior pets. Follow the cat-serving guidance on the current product page and label; a full sachet is a package size, not a universal feline dose. The complete ingredient list matters if your cat has food restrictions or already takes another supplement.

Check existing products for repeated ingredients such as CoQ10 or vitamins before adding a combination formula. A prescribed nutrient or therapeutic diet may serve a different purpose, so review changes with the treating veterinarian. Do not turn a human or dog research dose into a cat serving.

Food acceptance matters too. A cat that leaves the supplemented meal has not necessarily consumed the intended amount. If the addition puts your cat off food, pause it and ask about a suitable alternative. New appetite loss, weight loss or changes in movement deserve assessment in their own right.

For the rest of a healthy-aging routine, our cat longevity guide covers everyday care. If you are trying to consolidate several supplements, the all-in-one cat supplement guide explains where a combined formula helps and where a separate product still has a job.

Questions about cat longevity supplements

Which cat longevity supplement does La Petite Labs recommend?

We recommend our Hollywood Elixir Longevity System for owners seeking daily cellular-aging nutrition. Its 17-active formula combines NR with CoQ10, glutathione, B vitamins, antioxidants and immune-support ingredients in food-mixed sachets. Suitability depends on the cat's diet, health and existing routine.

Is NR the same as NAD+?

No. NAD+ is a molecule cells use in energy metabolism and other essential reactions. Nicotinamide riboside, or NR, is a starting material used to make NAD+. An NR ingredient should not be described as NAD+ itself.

At what age should a cat start a longevity supplement?

There is no age established by the evidence reviewed here at which every cat should start one. Hollywood Elixir is intended for adult and senior pets. Consider the actual formula alongside your cat's diet and health; age alone does not establish a supplement need.

Will a longevity supplement help a cat live longer?

The sources reviewed here do not establish a longer feline lifespan for Hollywood Elixir, PetDomain Longevity Complex or Life Extension Cat Mix. Their ingredient design can be discussed as nutritional support, but it should not be presented as a proven number of extra years.

Can I add Hollywood Elixir to a senior multivitamin?

Review both full labels first. Vitamins and other ingredients may overlap, and a combined routine may add more than intended. Your veterinarian can assess that overlap alongside medicines, health conditions and any therapeutic diet.

Is a cat-specific product automatically better than a formula for cats and dogs?

The label must explicitly include cats and provide appropriate directions. A cat-only name does not establish clinical superiority, and a dog-and-cat label does not remove the need to check the complete recipe and serving. Hollywood Elixir is formulated for both species with serving guidance.

Make cellular-aging nutrition part of the daily meal

Hollywood Elixir brings NAD+ starting materials, mitochondrial nutrients and antioxidant ingredients into a single 17-active longevity system. See the complete formula and choose the serving for your cat.

Explore Hollywood Elixir®

See current price and serving options

Sources for this buying guide

Food and nutritional purpose

AAFCO: Reading Labels explains complete and balanced food. Cornell Feline Health Center: Feeding Your Cat explains the limits of extra nutrients alongside complete food.

Cellular energy and antioxidant biology

Bieganowski and Brenner, 2004 identified a route from NR to NAD+. Kory and colleagues, 2020 studied mitochondrial NAD transport. Cerqua and colleagues, 2019 examined CoQ10's electron-carrier role. Mills, 1957 investigated glutathione peroxidase. These are biological studies, not feline trials of the compared formulas.

Feline metabolism

Metabolic abnormalities and reprogramming in cats with naturally occurring hypertrophic cardiomyopathy compared blood metabolites from 83 cats. It did not administer NR or a longevity formula.

Current product declarations

Current La Petite Labs product records establish Hollywood Elixir's composition and serving information. The current PetDomain Longevity Complex soft-chew label and Life Extension Cat Mix panel establish the compared ingredients and formats. The manufacturer records were checked October 25, 2026; they do not establish comparative clinical outcomes.

Earlier research report · historical product records

This archived comparison reflects the report’s original research date. Formulas and prices may have changed. Use the current guide above for today’s recommendation.

Earlier cat longevity supplement report

This archive contains 20 displayed competitor records from the earlier scoring project. Review dates: May 21, 2026; selected records dated September 3, 2026. The scores describe the earlier published rubric and source set; they are not current clinical rankings or evidence that one product delivers better health outcomes. Only the selected formula comparisons in the buying guide above were checked for this October update.

Use the original search, filters, comparison controls and evidence panels to explore the record. Product details may have changed. Specific outdated descriptions identified during this update have been corrected below; retained numerical scores have not been recalculated.

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 cat 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 cats get older.
Flagship
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 cats, support across several functions 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.

A lower score does not automatically mean a product is unsuitable. It may simply be narrower in scope, less transparent, or supported by fewer public quality signals than this rubric rewards.

  1. VetriScience Cardio-Strength Capsules — Heart Support for Cats & Dogs product photo
    1
    Rank
    82.7/100
    Strong
    1
    Rank
    CS
    Capsule
    VetriScience Cardio-Strength Capsules — Heart Support for Cats & Dogs

    VetriScience Cardio-Strength Capsules — Heart Support for Cats & Dogs

    VetriScience Laboratories (a FoodScience LLC brand) · Capsule

    Longevity FormulaCapsule
    82.7/100
    Strong

    VetriScience 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 USA

    What'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 score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing ↗
    Read comparison →
    1
    CS
    VetriScience Cardio-Strength Capsules — Heart Support for Cats & Dogs
    VetriScience Cardio-Strength Capsules — Heart Support for Cats & Dogs
    VetriScience Laboratories (a FoodScience LLC brand) · Capsule · Core Longevity Formula
    VetriScience 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 Disclosed
    82.7/100
    Strong
  2. Life Extension Cat Mix — Advanced Multi-Nutrient Formula product photo
    2
    Rank
    78.5/100
    Solid With Gaps
    2
    Rank
    LE
    Powder
    Life Extension Cat Mix — Advanced Multi-Nutrient Formula

    Life Extension Cat Mix — Advanced Multi-Nutrient Formula

    Life Extension (Fort Lauderdale, FL) · Powder

    Related BenchmarkPowder
    78.5/100
    Solid With Gaps

    Life 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 USA

    What'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 powder
    Taurine 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 score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026 · allergen description corrected Oct 25, 2026Sources: Product page · Retailer listing · Regulatory filing ↗
    Read comparison →
    2
    LE
    Life Extension Cat Mix — Advanced Multi-Nutrient Formula
    Life Extension Cat Mix — Advanced Multi-Nutrient Formula
    Life Extension (Fort Lauderdale, FL) · Powder
    Life 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 USA
    78.5/100
    Solid With Gaps
  3. 3
    Rank
    P
    90 soft chews; cats receive one-half chew one to two times daily.

    PetDomain Longevity Complex

    PetDomain · 90 soft chews; cats receive one-half chew one to two times daily.

    Longevity Formula90 soft chews; cats receive one-half chew one to two times daily.
    76.5/100
    Solid With Gaps

    PetDomain Longevity Complex replaces the former ThorneVet entry rather than joining it as a duplicate. Its current label gives cats one-half chew once or twice daily and prints all seven actives, including taurine 500 mg per full chew. The tradeoffs are a missing current online caution panel, no public lot-linked report, and unresolved current-versus-legacy NR salt wording.

    Best forCat owners whose veterinarian specifically wants this quantified taurine, NR, polyphenol, resveratrol, and astaxanthin profile and is comfortable splitting the chew.

    Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaNASC Quality Seal Clinical Evidence Published Made In USA

    What's in it

    • Seven individually quantified actives
    • A dedicated one-half-chew feline serving
    • Current PetDomain successor identity for the former ThorneVet SKU

    What's not in it

    • No public lot-specific V985-SC report
    • No current online caution panel
    • No separate cat-specific comparison page yet
    Label snapshotOne 3 g soft chew
    7 individually quantified active lines?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: Sep 3, 2026Sources: Product page · Label panel · FAQ page · Manufacturing page · COA lookup ↗
    3
    P
    PetDomain Longevity Complex
    PetDomain · 90 soft chews; cats receive one-half chew one to two times daily. · Core Longevity Formula
    PetDomain Longevity Complex replaces the former ThorneVet entry rather than joining it as a duplicate. Its current label gives cats one-half chew once or twice daily and prints ...
    Aging Biology FocusSystems ApproachNASC Quality Seal
    76.5/100
    Solid With Gaps
  4. Rx Vitamins Formula CV for Dogs & Cats product photo
    4
    Rank
    72.3/100
    Solid With Gaps
    4
    Rank
    CV
    Capsule
    Rx Vitamins Formula CV for Dogs & Cats

    Rx Vitamins Formula CV for Dogs & Cats

    Rx Vitamins for Pets (a Swedencare AB brand since 2021) · Capsule

    Longevity FormulaCapsule
    72.3/100
    Solid With Gaps

    Rx 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 USA

    What'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 capsule
    Hawthorn berry, L-carnitine, L-taurine, vitamin E, DMG, magnesium citrate, potassium citrate, coleus forskolii, selenium (selenomethionine)?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing ↗
    Read comparison →
    4
    CV
    Rx Vitamins Formula CV for Dogs & Cats
    Rx Vitamins Formula CV for Dogs & Cats
    Rx Vitamins for Pets (a Swedencare AB brand since 2021) · Capsule · Core Longevity Formula
    Rx 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 Disclosed
    72.3/100
    Solid With Gaps
  5. VetriScience Nu Cat Senior 27+ Active Health Soft Chews product photo
    5
    Rank
    72.1/100
    Solid With Gaps
    5
    Rank
    NC
    Soft chew
    VetriScience Nu Cat Senior 27+ Active Health Soft Chews

    VetriScience Nu Cat Senior 27+ Active Health Soft Chews

    VetriScience Laboratories (a FoodScience LLC brand) · Soft chew

    Related BenchmarkSoft chew
    72.1/100
    Solid With Gaps

    VetriScience 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 USA

    What'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 formulation
    Taurine 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 score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Retailer listing · Product page · Manufacturing page · Regulatory filing ↗
    Read comparison →
    5
    NC
    VetriScience Nu Cat Senior 27+ Active Health Soft Chews
    VetriScience Nu Cat Senior 27+ Active Health Soft Chews
    VetriScience Laboratories (a FoodScience LLC brand) · Soft chew
    VetriScience 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 USA
    72.1/100
    Solid With Gaps
  6. Fera Pets Wellness Blend for Cats — All-in-One Powder Supplement product photo
    6
    Rank
    71.6/100
    Solid With Gaps
    6
    Rank
    FP
    Powder
    Fera Pets Wellness Blend for Cats — All-in-One Powder Supplement

    Fera Pets Wellness Blend for Cats — All-in-One Powder Supplement

    Fera Pets, Inc. (Glendale, CA) · Powder

    Related BenchmarkPowder
    71.6/100
    Solid With Gaps

    Fera 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 USA

    What'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 · powder
    L-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 score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing ↗
    Read comparison →
    6
    FP
    Fera Pets Wellness Blend for Cats — All-in-One Powder Supplement
    Fera Pets Wellness Blend for Cats — All-in-One Powder Supplement
    Fera Pets, Inc. (Glendale, CA) · Powder
    Fera 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 Disclosed
    71.6/100
    Solid With Gaps
  7. Pet Wellbeing Old Friend — Immune, System, & Joint Health for Senior Cats product photo
    7
    Rank
    68.5/100
    Disclosure Gaps
    7
    Rank
    OF
    Liquid
    Pet Wellbeing Old Friend — Immune, System, & Joint Health for Senior Cats

    Pet Wellbeing Old Friend — Immune, System, & Joint Health for Senior Cats

    Pet Wellbeing (Vancouver, BC) · Liquid

    Longevity FormulaLiquid
    68.5/100
    Disclosure Gaps

    Pet 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 USA
    Worth Noting

    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.

    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 disclosed
    Alfalfa, guggul gum, reishi, astragalus, American ginseng, eleuthero, dandelion, ginger — grouped at 403 mg/ml total?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing ↗
    Read comparison →
    7
    OF
    Pet Wellbeing Old Friend — Immune, System, & Joint Health for Senior Cats
    Pet Wellbeing Old Friend — Immune, System, & Joint Health for Senior Cats
    Pet Wellbeing (Vancouver, BC) · Liquid · Core Longevity Formula
    Pet 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 Limited
    68.5/100
    Disclosure Gaps
  8. 8
    Rank
    W9
    Sachet

    Whisker9

    Whisker9 (parent company not publicly disclosed) · Sachet

    Longevity FormulaSachet
    66.5/100
    Disclosure Gaps

    Whisker9 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 published in cats. Per sachet you get full per-active doses across 14 ingredients spanning NAD+, an antioxidant network, prebiotic fiber, algal omega-3s, and 250 mg taurine, with explicit exclusion of alpha-lipoic acid, xylitol, and essential oils. The catch: the headline 40%-lower-mortality figure is the Cupp trial result on a complete Purina diet, not a result on the Whisker9 finished formula, and the product is not actually for sale as of May 2026 with no Certificate of Analysis, named third-party lab, NASC seal, or parent company disclosed.

    Best forOwners following the cat-longevity science who want to track a science-forward pre-launch formula, and who accept that its biggest claim still rests on inference from a different product rather than on the finished sachet itself.

    Aging Biology Focus Every Dose DisclosedSystems ApproachClean FormulaNASC Quality Seal Clinical Evidence Published Made In USA

    What's in it

    • Fourteen disclosed actives per single-serve sachet, including Niagen® nicotinamide riboside 75 mg, taurine 250 mg, algal EPA+DHA 150 mg, vitamin C as calcium ascorbate 65 mg, CoQ10 (ubiquinone) 10 mg, quercetin 12 mg, NAC 30 mg, chicory-root FOS 50 mg, and a B1 / B6 / B12 / folate complex.
    • Cat-first safety logic with algal (not fish) omega-3s, the gentler calcium-ascorbate form of vitamin C, low 1 mg beta-carotene, and explicit exclusion of alpha-lipoic acid, xylitol, and essential oils.
    • A pre-portioned single-serve sachet stirred into wet food once a day, designed for the feeding routine most cat households already follow.

    What's not in it

    • A clinical trial on the Whisker9 finished formula — the cited 40%-lower-mortality figure is the result of the Cupp/Purina lifetime feeding study on a complete Purina diet, not on this product.
    • Third-party trust scaffolding of any kind: no NASC Quality Seal, no public Certificate of Analysis, no named third-party testing laboratory, no disclosed manufacturer or facility location, and no named founder or DVM advisor.
    • Actual availability — as of May 2026 the checkout page lists the product as unavailable, no price is shown, and no launch date is published on the public site.
    Label snapshot14 actives disclosed at per-sachet mg or mcg
    Niagen® NR, Taurine, Algal EPA+DHA, Vit E, Vit C, Beta-carotene, Chicory Root FOS, Quercetin, CoQ10, NAC, B-complex?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page ↗
    Read comparison →
    8
    W9
    Whisker9
    Whisker9 (parent company not publicly disclosed) · Sachet · Core Longevity Formula
    Whisker9 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 Disclosed
    66.5/100
    Disclosure Gaps
  9. VetriScience Coenzyme Q10 10 mg Capsules Heart Supplement product photo
    9
    Rank
    66.4/100
    Disclosure Gaps
    9
    Rank
    CQ
    Capsule
    VetriScience Coenzyme Q10 10 mg Capsules Heart Supplement

    VetriScience 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 FormulaCapsule
    66.4/100
    Disclosure Gaps

    VetriScience 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 USA
    Worth Noting

    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

    • 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 label
    Coenzyme Q10 (ubiquinone) 10 mg?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Manufacturing page · Regulatory filing ↗
    Read comparison →
    9
    CQ
    VetriScience Coenzyme Q10 10 mg Capsules Heart Supplement
    VetriScience 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 · Core Longevity Formula
    VetriScience 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 Scope
    66.4/100
    Disclosure Gaps
  10. Pet Wellbeing CORE IMMUNE CARE for Cats — Daily Antioxidant Support product photo
    10
    Rank
    64.5/100
    Disclosure Gaps
    10
    Rank
    CI
    Powder
    Pet Wellbeing CORE IMMUNE CARE for Cats — Daily Antioxidant Support

    Pet Wellbeing CORE IMMUNE CARE for Cats — Daily Antioxidant Support

    Pet Wellbeing · Powder

    Related BenchmarkPowder
    64.5/100
    Disclosure Gaps

    Pet 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 USA
    Worth Noting

    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 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 disclosed
    Hydrolyzed 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 score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing ↗
    Read comparison →
    10
    CI
    Pet Wellbeing CORE IMMUNE CARE for Cats — Daily Antioxidant Support
    Pet Wellbeing CORE IMMUNE CARE for Cats — Daily Antioxidant Support
    Pet Wellbeing · Powder
    Pet 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 Limited
    64.5/100
    Disclosure Gaps
  11. NaturVet VitaPet Senior Daily Vitamins Cat Soft Chews product photo
    11
    Rank
    63.6/100
    Disclosure Gaps
    11
    Rank
    NV
    Soft chew
    NaturVet VitaPet Senior Daily Vitamins Cat Soft Chews

    NaturVet VitaPet Senior Daily Vitamins Cat Soft Chews

    NaturVet (a Garmon Corp brand; subsidiary of Swedencare AB) · Soft chew

    Related BenchmarkSoft chew
    63.6/100
    Disclosure Gaps

    NaturVet 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 USA

    What'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 actives
    Glucosamine 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 score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Manufacturing page · Regulatory filing · Retailer listing ↗
    Read comparison →
    11
    NV
    NaturVet VitaPet Senior Daily Vitamins Cat Soft Chews
    NaturVet VitaPet Senior Daily Vitamins Cat Soft Chews
    NaturVet (a Garmon Corp brand; subsidiary of Swedencare AB) · Soft chew
    NaturVet 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 USA
    63.6/100
    Disclosure Gaps
  12. NHV Old Timer for Cats product photo
    12
    Rank
    61/100
    Disclosure Gaps
    12
    Rank
    OT
    Liquid
    NHV Old Timer for Cats

    NHV Old Timer for Cats

    NHV Natural Pet Products (Vancouver, BC) · Liquid

    Longevity FormulaLiquid
    61/100
    Disclosure Gaps

    NHV 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 USA
    Worth Noting

    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.

    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 disclosed
    Guggul, Asian Ginseng, Ginger, Astragalus, Alfalfa, Cayenne (147 mg dry-herb total combined)?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing ↗
    Read comparison →
    12
    OT
    NHV Old Timer for Cats
    NHV Old Timer for Cats
    NHV Natural Pet Products (Vancouver, BC) · Liquid · Core Longevity Formula
    NHV 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 Limited
    61/100
    Disclosure Gaps
  13. Standard Process Feline Whole Body Support product photo
    13
    Rank
    55.8/100
    Disclosure Gaps
    13
    Rank
    SP
    Tablet
    Standard Process Feline Whole Body Support

    Standard Process Feline Whole Body Support

    Standard Process Inc. (Palmyra, WI) · Tablet

    Related BenchmarkTablet
    55.8/100
    Disclosure Gaps

    Standard 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 USA
    Worth Noting

    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

    • 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 Analysis
    Whole-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 score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing ↗
    Read comparison →
    13
    SP
    Standard Process Feline Whole Body Support
    Standard Process Feline Whole Body Support
    Standard Process Inc. (Palmyra, WI) · Tablet
    Standard 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 Limited
    55.8/100
    Disclosure Gaps
  14. Huggibles Tasty Toppers Senior Vitality Blend Liquid Topper product photo
    14
    Rank
    55.6/100
    Disclosure Gaps
    14
    Rank
    HG
    Liquid topper
    Huggibles Tasty Toppers Senior Vitality Blend Liquid Topper

    Huggibles Tasty Toppers Senior Vitality Blend Liquid Topper

    Huggibles · Liquid topper

    Longevity FormulaLiquid topperProprietary Blend
    55.6/100
    Disclosure Gaps

    Huggibles 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 USA
    Worth Noting

    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.

    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 disclosed
    CoQ10, Glutathione, MSM, Resveratrol, Quercetin, Ellagic Acid, Salmon Oil (EPA/DHA), B-Complex Blend, Bromelain, Spirulina, Turmeric, Ginger Root, Inositol, Proprietary Probiotic Blend?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Retailer listing · Product page · Manufacturing page ↗
    Read comparison →
    14
    HG
    Huggibles Tasty Toppers Senior Vitality Blend Liquid Topper
    Huggibles Tasty Toppers Senior Vitality Blend Liquid Topper
    Huggibles · Liquid topper · Core Longevity Formula
    Huggibles 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 Limited
    55.6/100
    Disclosure Gaps
  15. NHV Natures Immuno For Cats — Medicinal Mushroom Blend product photo
    15
    Rank
    53.5/100
    Disclosure Gaps
    15
    Rank
    NI
    Liquid
    NHV Natures Immuno For Cats — Medicinal Mushroom Blend

    NHV Natures Immuno For Cats — Medicinal Mushroom Blend

    NHV Natural Pet Products (Vancouver, BC) · Liquid

    Related BenchmarkLiquidProprietary Blend
    53.5/100
    Disclosure Gaps

    NHV 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 USA
    Worth Noting

    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

    • 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 disclosed
    Proprietary mushroom blend: Turkey Tail (mycelium), Reishi, Cordyceps, Agaricus, Shiitake — 250 mg total dry equivalent?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing ↗
    Read comparison →
    15
    NI
    NHV Natures Immuno For Cats — Medicinal Mushroom Blend
    NHV Natures Immuno For Cats — Medicinal Mushroom Blend
    NHV Natural Pet Products (Vancouver, BC) · Liquid
    NHV 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 Limited
    53.5/100
    Disclosure Gaps
  16. Pet Wellbeing Life Gold for Cats — Immune, Antioxidant, Detoxification Support product photo
    16
    Rank
    52.2/100
    Disclosure Gaps
    16
    Rank
    LG
    Liquid
    Pet Wellbeing Life Gold for Cats — Immune, Antioxidant, Detoxification Support

    Pet Wellbeing Life Gold for Cats — Immune, Antioxidant, Detoxification Support

    Pet Wellbeing (Boulder, CO) · Liquid

    Related BenchmarkLiquidProprietary Blend
    52.2/100
    Disclosure Gaps

    Pet 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 USA
    Worth Noting

    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

    • 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 equivalent
    Astragalus root, Blessed Thistle, Sheep Sorrel, Burdock root, Slippery Elm bark, Ginger — total 312 mg/ml proprietary blend?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing ↗
    Read comparison →
    16
    LG
    Pet Wellbeing Life Gold for Cats — Immune, Antioxidant, Detoxification Support
    Pet Wellbeing Life Gold for Cats — Immune, Antioxidant, Detoxification Support
    Pet Wellbeing (Boulder, CO) · Liquid
    Pet 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 Limited
    52.2/100
    Disclosure Gaps
  17. PetAg KMR Healthy Aging Powder for Adult & Senior Cats product photo
    17
    Rank
    51.5/100
    Disclosure Gaps
    17
    Rank
    KMR
    Powder
    PetAg KMR Healthy Aging Powder for Adult & Senior Cats

    PetAg KMR Healthy Aging Powder for Adult & Senior Cats

    Pet-Ag, Inc. (Hampshire, IL) · Powder

    Longevity FormulaPowder
    51.5/100
    Disclosure Gaps

    PetAg 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 USA
    Worth Noting

    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.

    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 disclosed
    Marine microalgae oil (omega-3), taurine, vitamin E (30 IU/kg min), full vitamin/mineral premix; milk-protein base?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Brand page · Retailer listing · Regulatory filing ↗
    Read comparison →
    17
    KMR
    PetAg KMR Healthy Aging Powder for Adult & Senior Cats
    PetAg KMR Healthy Aging Powder for Adult & Senior Cats
    Pet-Ag, Inc. (Hampshire, IL) · Powder · Core Longevity Formula
    PetAg 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 Scope
    51.5/100
    Disclosure Gaps
  18. Resvantage Feline — Resveratrol Longevity Supplement for Cats product photo
    18
    Rank
    51.3/100
    Disclosure Gaps
    18
    Rank
    RF
    Capsule
    Resvantage Feline — Resveratrol Longevity Supplement for Cats

    Resvantage Feline — Resveratrol Longevity Supplement for Cats

    Advantage Biosciences (Costa Mesa, CA) · Capsule

    Longevity FormulaCapsule
    51.3/100
    Disclosure Gaps

    Resvantage 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 USA
    Worth Noting

    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

    • 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 monotherapy
    Resveratrol-trans 3 mg, Atlantic Kelp 50 mg, Flaxseed Oil 100 mg, Lecithin 50 mg, Taurine 50 mg?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing · Peer-reviewed study ↗
    Read comparison →
    18
    RF
    Resvantage Feline — Resveratrol Longevity Supplement for Cats
    Resvantage Feline — Resveratrol Longevity Supplement for Cats
    Advantage Biosciences (Costa Mesa, CA) · Capsule · Core Longevity Formula
    Resvantage 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 Scope
    51.3/100
    Disclosure Gaps
  19. PetAlive Brain Health for Senior Cats — Natural Herbal Liquid Drops product photo
    19
    Rank
    50.9/100
    Disclosure Gaps
    19
    Rank
    PA
    Liquid
    PetAlive Brain Health for Senior Cats — Natural Herbal Liquid Drops

    PetAlive 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 BenchmarkLiquid
    50.9/100
    Disclosure Gaps

    PetAlive 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 USA
    Worth Noting

    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

    • 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 daily
    Spirulina extract, Green Tea leaf, Oatstraw, Polygonum multiflorum (Fo ti) stem, Amalaki fruit — all certified organic?
    Why this score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Retailer listing · Regulatory filing ↗
    Read comparison →
    19
    PA
    PetAlive Brain Health for Senior Cats — Natural Herbal Liquid Drops
    PetAlive 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
    PetAlive 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 Limited
    50.9/100
    Disclosure Gaps
  20. NHV Multi Essentials for Cats — Herbal Liquid Multivitamin product photo
    20
    Rank
    49.9/100
    Sparse Public Evidence
    20
    Rank
    ME
    Liquid
    NHV Multi Essentials for Cats — Herbal Liquid Multivitamin

    NHV Multi Essentials for Cats — Herbal Liquid Multivitamin

    NHV Natural Pet Products (Vancouver, BC) · Liquid

    Related BenchmarkLiquidProprietary Blend
    49.9/100
    Sparse Public Evidence

    NHV 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 USA
    Worth Noting

    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, 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 disclosed
    11-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 score
    itap any criterion for evidence
    — —
    Why this score

    What's missing

    Brand's own words
    Last reviewed: May 21, 2026Sources: Product page · Regulatory filing · Retailer listing ↗
    Read comparison →
    20
    ME
    NHV Multi Essentials for Cats — Herbal Liquid Multivitamin
    NHV Multi Essentials for Cats — Herbal Liquid Multivitamin
    NHV Natural Pet Products (Vancouver, BC) · Liquid
    NHV 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 Limited
    49.9/100
    Sparse Public Evidence
§III

How the earlier longevity report was scored.

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.

Inclusion rules: products enter this ranking when they are marketed to the category with public US availability and a retrievable label or supplement-facts panel; single-purpose formulas positioned outside the category are evaluated but excluded from the numbered ranking, and discontinued, renamed, or rebranded records are retained as explicit exclusions in the underlying dataset rather than silently dropped or counted twice.

This is an archived research report. Its source dates and numerical scores remain historical. The current buying guide above has a separate source list and selected comparisons.

Archived Evidence Dataset

The earlier scoring dataset, as machine-readable JSON.

The public dataset includes the scoring rubric, criterion definitions, product-level evidence, source quotes, and reasoning used for this ranking. Archived for inspection of the earlier method and source records; its counts and descriptions may predate the displayed report.

cat-longevity-scoring-dataset-2026.json
Reviewed21
Ranked20
Criteria8
Evidence sources143

Continue exploring

STANDARDLPL-01 Standard CAT RANKINGCat Skin & Coat Rankings CAT RANKINGCat All-in-One Rankings LPL-01 SYSTEMHollywood Elixir® Longevity System