Feline evidence first
Ingredient decisions prioritize direct cat evidence, with other evidence labeled clearly.
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Adult cat formula
One premium daily formula with 21 fully disclosed actives.
1/4
Daily single-serve sachets
Whisker9
A fully disclosed 21-active formula for adult cats, designed to mix cleanly into wet food.
For adult cats of all ages. Not for kittens or pregnant or lactating cats.
Choose a plan
We recommend starting with 90 days for a fair read on consistency and routine.
Price
$235.00
21 active ingredientsFree shippingMoney-back guarantee
Ask a product question21
fully disclosed active ingredients
30
single-serve sachets per box
1×
simple once-daily wet-food routine
4
plain-language evidence levels
Why it’s different
Three things should be obvious at first glance.
Whisker9 is built to read clearly: cat data first, a fully inspectable label, and a daily format designed to fit a real wet-food routine.
Fully disclosed formula
Every active is named. Every dose is visible.
Built for daily compliance
Pre-portioned sachets designed to fit a real wet-food routine.
What’s inside
Six featured actives, with the full label still easy to inspect.
The main scan path stays focused on the actives most likely to matter on first read. The complete 21-active label remains available below and on the ingredients page.
See every ingredient and evidence level75 mg
Nicotinamide Riboside (Niagen®)
A NAD+ precursor included to support cellular energy and repair pathways associated with healthy aging.
250 mg
Taurine
An essential feline nutrient supporting normal cardiac, retinal, bile-acid, and mitochondrial function.
150 mg combined
EPA + DHA (Algal)
A protected omega-3 layer for renal, cognitive, inflammatory, and cell-membrane support.
250 mg
Betaine
Supports methylation, metabolic resilience, body composition, and gut-kidney-axis nutrition.
1 × 10¹⁰ cell equivalents
Postbiotic
A shelf-stable gut-barrier and immune-support layer designed to remain honest through the end of shelf life.
75 mg
Green-Lipped Mussel
A moderate whole-life mobility layer supporting normal joint comfort and movement.
View all 21 disclosed actives
75 mg
Nicotinamide Riboside (Niagen®)
10 mg
Trans-Resveratrol
250 mg
Taurine
150 mg combined
EPA + DHA (Algal)
10 mg
CoQ10
75 mg
L-Carnitine
1 mg
Spermidine
12 mg
Quercetin
30 IU total
Vitamin E
50 mg equivalent
Vitamin C
1 mg
Beta-Carotene
250 mg
MCT Powder
50 mg
L-Arginine
0.75 mg
Vitamin B1
0.5 mg
Vitamin B6
50 mcg
Vitamin B12
75 mcg
Folic Acid
50 mg
Chicory Root (Inulin/FOS)
250 mg
Betaine
1 × 10¹⁰ cell equivalents
Postbiotic
75 mg
Green-Lipped Mussel
The evidence
The proof is a real feline longevity study, not a decorative science story.
The Cupp lifetime feeding study informs our evidence framework: 9+ years, 90 cats, and 40% lower mortality in its supplemented-diet group. It did not test Whisker9.
Anchor finding
40%
lower mortality in the supplemented group
The supplemented group also lived about one year longer and maintained more lean body mass across the study period.
9+ years
Study length
90 cats
Study population
p=0.0089
Reported significance
What the study showed
In the Cupp study, the supplemented-diet group showed 40% lower mortality, lived about one year longer, and maintained more lean body mass.
How Whisker9 uses it
The study informs our evidence framework and ingredient logic. It did not test Whisker9 or this 21-active formula.
What the signal means
Diet 2, which used antioxidants alone, did not reproduce the same outcome. The published survival signal came from the combined blend.
How to use it
One sachet. Mixed into wet food. Repeated once daily.
01
Open one sachet
Tear open a single sachet for one clean daily serving.
02
Mix with wet food
Stir it into your cat’s usual wet food until it disappears.
03
Serve once daily
Keep the routine consistent by serving it once each day.
Designed to fit into the wet-food routine most cat households already have.
Questions before you buy
Short answers on timing, daily use, and what to expect from the formula.
Whisker9 is formulated for healthy adult cats of all adult ages. For adult cats of all ages. Not for kittens or pregnant or lactating cats.
Consistency matters more than a quick before-and-after. A 90-day stretch is a practical benchmark for evaluating fit, routine, and tolerance.
Each packet is organized into daily single-serve sachets. Tear one sachet, mix it into wet food, and repeat once daily.
The formula uses chicken liver, fish, tuna or bonito, and low-level organ hydrolysates for feline acceptance. Introduce it gradually if your cat is sensitive to changes.
Every active dose is disclosed so the formula can be evaluated ingredient by ingredient. We publish every ingredient and every dose.
Start with 90 days
Long-term support works best as a daily habit. Start with the recommended 90-day plan.
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90-day subscription
$235.00
Renews every 3 months
Whisker9
$235.00·90-day subscription