Catlyst Whole Cat
Catlyst Whole Cat
Catlyst Whole Cat
Catlyst Whole Cat
Catlyst Whole Cat
Catlyst Whole Cat
Catlyst Whole Cat
Catlyst Whole Cat

50,000+ devoted cat parents

Catlyst Whole Cat

Kidney & Immune Support

#1
VET RECOMMENDED
Made in USA | Third-Party Tested

Don't wait for the silent damage. Most cats quietly lose kidney function long before any symptoms appear. One daily scoop of Whole Cat gives them exactly what their body has been missing.

Kidney Defense

Waste Clearance

Immune Support

Healthy Aging

60-day money-back guarantee

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Nadia K.
Nadia K.
Lost my first cat to kidney problems at 8. Vet said it's just what happens with cats, but watching her go from healthy to gone in six weeks destroyed me. Adopted Mochi from a rescue at six and started her on Whole Cat the same week because I wasn't doing that again. She's seven now and honestly she acts younger than when I got her. Eats like I've been starving her, does laps at 3am like a kitten, still curls into me every night. She doesn't even know it's a supplement. My vet can't believe she's seven. For the first time I actually think she's going to grow old with me. I just wish I'd found Whole Cat before I lost my first.
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The first US-made kidney supplement built on the amino-acid research that's changing feline kidney science. Once cat parents find us, they never stop ordering.

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Daily Scoop Guide

What's inside Catlyst Whole Cat?

L-carnitine
Fat from her food can't enter the cell's power plants on its own. L-carnitine carries it in, so her body can use its food for energy instead of drawing on muscle.*


CoQ10
Once the fuel is inside, CoQ10 helps convert it into usable energy. The body makes its own, but studies in people and lab animals show it makes less with age.*


Taurine
Her heart is the hardest-working muscle she has, and it needs taurine. Cats can't make enough, and heat-processed food loses a large share. Ours is never cooked.*

Why does my cat need Whole Cat support?

Whole Cat is a protein every mammal is born with. Its only job is to clear dead-cell debris from the kidneys before it builds up and causes damage.
 

In dogs and humans it works fine. In cats it doesn't. Every domestic cat carries a genetic defect that prevents their Whole Cat from ever fully activating, which means cellular waste has been quietly accumulating in their kidneys since the day they were born.
 

That's why kidney disease is the number one killer of cats and why 1 in 3 will develop it regardless of diet, breed, or how well you care for them. No fountain, no wet food, and no standard supplement touches this.
 

Whole Cat delivers the specific amino acids and immune triggers the kidney's cleanup process depends on, in a pure tuna bonito base your cat will actually want to eat.

What results will my cat actually see?

Every cat's kidneys accumulate dead-cell debris from birth — a genetic defect that no food or fountain can fix.
 

Whole Cat supplies the exact amino-acid complex that kidney cleanup process depends on, supporting healthier kidney function before damage becomes irreversible.

 

Cats who start early show cleaner kidney panels, stronger energy levels, and healthier coats — and hold onto them well into old age.

 

The scariest part of kidney disease is how silent it is. This is what you do about it before the silence breaks.

Is it safe for daily use — and will my cat actually eat it?

Absolutely. Every ingredient in Whole Cat is safe for daily use with no side effects — your cat's body simply uses what it needs and clears the rest.
 

Whole Cat contains pure freeze-dried bonito (dried flake tuna).
 

The supplement your cat was never going to touch becomes the thing they sprint to their bowl for. No pills. No fights. No hiding it in anything.
 

Just one scoop in their food every morning — the easiest decision you'll make for their health.
Third-Party Tested
Vet-Formulated
Immune Defense
Kidney Support
Made in USA
Third-Party Tested
Vet-Formulated
Immune Defense
Kidney Support
Made in USA

Why Whole Cat Matters:

The silent condition responsible for kidney failure in 1 in 3 cats worldwide.

Failing Kidneys

Every cat's kidney depends on a specific protein to clear dead-cell debris from its filtering tubes. In every domestic cat, that protein is permanently bound and unable to work — debris accumulates silently from birth until the filters fail.

No Warning Signs

Cats are hardwired to mask pain and illness until it is severe. Most owners notice nothing until their cat has already lost the majority of their kidney function — permanently.

Irreversible Damage

Kidney cells do not regenerate. Every year without support is another year of silent, cumulative damage that cannot be undone — no matter how good the diet or how attentive the care.

The Leading Cause of Death in Cats

1 in 3 cats develops chronic kidney disease. It is the single biggest reason cats die before their time.

The Discovery That Changed Everything We Know About Cats

In 2016, a Japanese immunologist named Dr. Toru Miyazaki published findings in Nature Medicine that proved every domestic cat carries a condition no other mammal on earth shares — a protein their kidneys depend on that has never been able to function.

Title

Whole Cat is built on the amino-acid science his research identified — giving your cat's kidneys the daily nutritional support that pathway has always been missing.

Rated 4.8/5 based on 7,835+ Reviews

50,000+ Happy Cat Parents 

Bring Back the Zoomies

Real outcomes from parents who are committed to their cat's health.

96%

Noticed

Improved energy and engagement within the first month.

93%

Reported

a positive improvement in kidney health at their vet checkup.

89%

Described

their cat acting like a kitten again.

* In a post-purchase survey of 600 cats who've been using Whole Cat consistently.

Proven Benefits. Backed by Vet Science.

  • Aging Longevity

  • Kidney Support

  • Immune Resilience

  • Renal Defense

Offsets the natural decline that comes with every passing year.

Cats who receive consistent daily nutritional support give their kidneys the best possible chance of functioning well into old age. Cleaner bloodwork. More energy. A cat that stays sharp and active long past the age most owners quietly start to worry.

Supports healthy kidney function into senior years

Promotes energy coat health and overall vitality

Supports the kidney's natural ability to clear cellular debris.

Every cat's kidney filtering tubes depend on a precise amino-acid complex to stay clear. Without it, dead-cell debris accumulates silently from birth — scarring the filters and reducing function year after year. Whole Cat supplies L-Cystine and L-Methionine in the exact ratio that process depends on, giving the kidney what it needs to do its job.

Supports the kidney's natural debris-clearing process daily

Targets the root problem not just the symptoms

Regulated immune response and reduced cellular inflammation.

Taurine acts as a direct antioxidant inside immune cells, neutralising the free radicals that drive chronic inflammation. It keeps your cat's immune system calibrated to fight back without overreacting.

Neutralises free radicals at the cellular level

Supports faster recovery and year-round immune resilience

Protects kidney cells from the damage that accumulates with age.

L-Methionine and Astragalus work at the cellular level to protect kidney tissue from the oxidative stress that accelerates scarring. Without this protection, the damage that builds silently from birth compounds faster with every passing year.

Protects kidney tissue from oxidative damage and scarring

Supports cellular resilience through every life stage

Is Whole Cat Right for Your Cat?

See if your cat is at risk:

My Cat Seems Healthy

That's exactly when to start. The condition builds silently from birth — long before any symptoms appear. By the time a vet detects a problem, most cats have already lost 65–75% of kidney function permanently. The cats who do best are the ones whose owners started before anything looked wrong.

Senior Cat

The damage is cumulative. Every year without nutritional support is another year of silent buildup that cannot be undone. Senior cats are the most urgent case — but starting now is still better than not starting.

Already on a Kidney Supplement

Most kidney supplements address general support. Whole Cat targets the specific amino-acid pathway behind the condition Dr. Miyazaki's research identified. It's not either/or — it's the part most supplements don't touch.

My Vet Hasn't Mentioned This

Most vets only test kidney health after symptoms appear. By then, the deficiency has already done permanent damage.
 

Whole Cat is preventative — it fills the gap before your vet ever needs to have that conversation with you.

I Already Use Taurine and a Water Fountain

Both reduce the strain on your cat's kidneys — and we'd never tell you otherwise. But hydration alone doesn't address why 1 in 3 cats still develops kidney disease. That's a condition no diet or water intake can reach. Whole Cat does.

Brooke Myers, DVM

Board-Certified Feline Medicine Specialist

Title

"Kidney failure is the most common reason I lose cat patients too soon. The amino-acid science behind why it happens is now clear — and Whole Cat is the only supplement I've found that actually addresses it, with every ingredient and dose right there on the label."

Your Cat's Taurine Journey

Consistency is key. Here's what daily supplementation does.

Week 1: Early Support
  • Key amino acids begin building in the system for the first time
  • The kidney's natural cleanup pathway starts receiving daily support
  • Your cat thinks they got a new treat
1 Month: Building Momentum
  • Coat visibly softer, shinier, fuller
  • Energy noticeably higher. More play, more movement, more life
  • Appetite strong and consistent. The first sign most owners notice
3 Months: Full Protection
  • Kidney support sustained and consistent with daily use
  • The extra years most owners never get to have
  • The peace of mind that you started before anything looked wrong

Why Whole Cat Stands Out

Original

Other

Pure Tuna Bonito Flavor

No Proprietary Blends

No Side Effects

Vet-Formulated

Third-Party Tested

Made in the USA

 60-Days Risk Free Trial

We understand the skepticism. In a market full of questionable products, we believe in proof over promises. That's why we invite you to experience the benefits of Whole Cat for a full 60 days, completely risk-free.

100% Satisfaction

Fast Shipping

Easy Returns

Got Questions? We've Got Answers!

Does taurine supplementation actually work?

Absolutely. Cats who start daily supplementation early and stay consistent give their kidneys the best possible chance of functioning well into old age. Cleaner bloodwork. More healthy years. A cat that stays active and present long past the age most owners start to worry.

My cat is already older — is it too late?

It's not too late — but it matters that you start now. Kidney damage is cumulative and irreversible, which means the goal at any age is to slow what's building and support what's left.
 

Senior cats are actually the most urgent case. The best time to start was years ago. The second best time is today.

When will I see results?

Most cat parents notice improved energy and engagement within the first few weeks. The deeper kidney-level support builds over 90 days.

How is this different from other kidney supplements?

Most kidney supplements address general support or symptom management. Whole Cat is the only US-made supplement built on the amino-acid science behind Dr. Miyazaki's Nature Medicine research — targeting the condition at its root, not just the surface.

How long does one tub last?

One tub contains 60 servings. For cats under 7 lbs, that's two months. For cats between 7–16 lbs, one month. Most parents subscribe monthly and save 30%.

How do I give it to my cat?

Sprinkle directly over your cat's wet food, dry kibble, or raw meal once daily.

Under 7 lbs: 1/2 Scoop Daily (1g)

7 lbs to 16 lbs: 1 Scoop Daily (2g)

Over 17 lbs: 2 Scoops Daily (4g)

Is it safe for daily use?

Completely safe for daily use at any age with no side effects. Every ingredient is vet-formulated, third-party tested, and manufactured in the USA. Your cat's body uses what it needs and clears the rest naturally.

Can it be taken alongside medications or other supplements?

Yes. Whole Cat is a safe daily nutritional supplement with no known interactions.

I already give my cat taurine, do I still need this?

Taurine supports your cat's heart and eyes — it's essential and we include it in our formula too. But taurine is the end of the sulfur-amino pathway. The kidney's natural cleanup process needs what's at the beginning of it. That's what Whole Cat supplies — the part taurine was never built to reach.