Frequently asked questions

Every ingredient has been reviewed for feline safety. We exclude all known toxic substances — alpha-lipoic acid (lethal to cats at 30mg/kg), xylitol, essential oils, and preformed vitamin A. We use forms specifically chosen for cat physiology.

The powder uses a meat-based palatant system optimized for feline acceptance. Mix one scoop into wet food — most cats eat it without noticing.

Coat quality, energy, and appetite improvements are commonly reported within 4–8 weeks. The deeper cellular benefits build over months of consistent daily use.

Yes. While benefits are most pronounced for cats 7+, taurine, omega-3s, and antioxidants support cellular health at any age.

The included scoop has markings for three weight tiers: under 8 lbs, 8–12 lbs, and over 12 lbs.

Whisker9 is the only cat supplement built on the Cupp lifetime feeding trial — a 9-year, 90-cat controlled study showing 40% lower mortality (p = 0.0089). We publish every ingredient and every dose.

Nicotinamide riboside is a NAD+ precursor backed by 500+ published studies. NAD+ declines with aging and is essential for DNA repair and cellular energy. Niagen® is the clinically validated form from ChromaDex.

Whisker9 is designed to be compatible with standard veterinary care. If your cat takes calcium channel blockers, immunosuppressives, or nitroglycerin, consult your vet first.

The legacy catalog is being removed while Whisker9 is rebuilt as a Hydrogen-first storefront. Launch updates will go out once the new USD checkout and US market configuration are live.

Yes. The rebuild is being aligned around USD pricing and a United States primary market, replacing the old storefront configuration.

They are being deleted before relaunch. The next catalog will be rebuilt from scratch rather than carried over from the legacy storefront.

No. The Cupp study we reference was conducted by Nestlé Purina between 2001–2010 as a lifetime feeding study with cats receiving standard veterinary care — it was not a harmful intervention study.