
AIM-Based Kidney Support for Cats
Tailored for feline biology—built on real science, not generic care.
Trusted by 3,500+ cat guardians and used by over 10,000 cats worldwide.
📌 Shipping to KSA and UAE is temporarily suspended due to flight disruptions.
Cats Are Different
Even with diet and renal care,
some cats still struggle with appetite, energy, or lab values.
Here’s why:
Cats are biologically different.
They aren’t just small dogs.
Their AIM protein stays inactive—so the body struggles to clear waste.
This was confirmed in a 2016 study by Dr. Toru Miyazaki, published in Scientific Reports.
Why Guardians Choose Greycoat Dr. Toru
- AIM-Based Science – Developed based on the research of Dr. Toru Miyazaki
- Feline-Specific Formula – Designed for cats, not dogs
- Reported Benefits – Appetite, vitality, and overall stability
- Guardian Approved – Backed by 3,500+ one-on-one consultations
- Easy to Add – Works with most existing routines
Meet Dr. Toru Miyazaki – The Mind Behind AIM
Physician-turned-researcher who discovered AIM and transformed it into feline kidney support.
TT, one of the first cats to receive AIM-based support, regained strength in just a few weeks—
and today, guardians in 30+ countries trust it to help their own.
Start Fresh—or Add to What’s Working
Greycoat Dr. Toru is designed to work on its own.
Many guardians began with just this—and saw better appetite, energy, and stability.
Already using other kidney support?
You can keep what’s working and simply add this in.
If your cat isn’t taking other amino acid supplements, you can add this without any overlap.
When You Want to See Just a Little More
Even with a stable routine,
many guardians wanted just a bit more—
a little more energy, appetite, or balance.
That’s when they turned to AIM-based support—
already trusted by vets and guardians in Japan and Korea.
What’s Inside
Carefully formulated to support long-term kidney wellness
- Amino Acid Complex
A proprietary blend inspired by AIM research—designed to support the natural waste-clearing process in cats. - Coenzyme Q10
Helps sustain cellular energy and contributes to an environment that supports AIM activity. - Resveratrol Provides antioxidant protection and helps maintain a healthy AIM environment within the kidneys.
What Guardians Are Saying
These cats followed Greycoat’s structured Kidney Care Program, with Greycoat Dr. Toru used in their care.
How to Use
- Under 3 kg (6.6 lb) : 1 capsule per day
- Over 3 kg (6.6 lb) : 2 capsules per day
- Can be given whole or opened and mixed into food or a lickable treat
- Flavorless and odorless—easy for daily use
- For sensitive cats: start with a half dose
Usage Note
About 0.5% of cats may experience mild vomiting, typically due to temporary stomach sensitivity to amino acids.
If this occurs:
→ Open the capsule and give half
→ Mix with wet food or a lickable treat
Most cats tolerate it well with this adjustment.
Expert Endorsements
✔ Dr. Toru Miyazaki
Discoverer of AIM, founder of the Institute for AIM Medicine
✔ Dr. Motoo Kobayashi
Kobayashi Animal Preventive Medicine Center
✔ Dr. Kim Jae-young
Korea’s feline aging expert, guardian of 28-year-old cat "Minky"
About Greycoat Research
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Product Details
- Product Name: Greycoat Dr. Toru
- Contents: 60 capsules
- Ingredients: Amino Acid Complex, Resveratrol, Coenzyme Q10
- Price: $46.60
- Made in: South Korea
- Duration:
→ Under 3kg: ~2 months
→ Over 3kg: ~1 month - Form: Capsule (additive-free, flavorless)
- Storage: Store in a cool, dry place out of direct sunlight
Before You Go
You don’t have to change everything.
Just add the support your cat may be missing.
Start today with feline-specific AIM support.
Our mission is to advance feline kidney health.
— Greycoat Research
Kidney AIM
Greycoat Dr. Toru

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FAQ
Is Greycoat Dr. Toru safe for cats with kidney disease?
How is Greycoat Dr. Toru different from other kidney supplements for cats?
Can I use Greycoat Dr. Toru with a prescription kidney diet or other supplements?
When should I start giving Greycoat Dr. Toru to my cat?
How do I give Greycoat Dr. Toru to a picky or sensitive cat?
Can I give Greycoat Dr. Toru to a senior cat?
Can dogs take Greycoat Dr. Toru?
Can I give Greycoat Dr. Toru together with the Intensive Protocol?
Can I give Greycoat Dr. Toru with medications?
What is the recommended daily dosage for cats?
What is the shelf life of Greycoat Dr. Toru?
What's in the Guaranteed Analysis?