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Greycoat Kidney Program

Every cat's kidney journey is different.
We help you understand yours — with warmth,
science, and a steady plan.
Start Your Routine with AIM Start Free Consultation

Powered by AIM-Based Science

AIM is the protein that helps the kidneys clear waste.
Dr. Toru Miyazaki discovered how AIM functions in cats —
and his discovery opened a new path for supporting feline kidney health.

Explore Greycoat Dr. Toru
Kidney-Focused
Kidney-Focused
Inflammation-Related
Inflammation-Related
Cancer-Related
Cancer-Related
Shop
Shop
Consult
Consult

Our Scientific & Veterinary Advisory Team

  • Dr. Kobayashi Motoo

    Director of Kobayashi Animal Preventive Medicine Center (Tokyo), with over 30 years of clinical experience. He was the first veterinarian to apply AIM science to feline kidney care.

  • Dr. Kim Jae-young

    Korean longevity expert and veterinarian with 30+ years of clinical experience. He is the guardian of Mingki, a cat who lived to the age of 28.

  • Dr. Toru Miyazaki

    Founder of the Institute for AIM Medicine and discoverer of the immune protein AIM. His groundbreaking research laid the foundation for the Greycoat Dr. Toru.

1 3
STAGE-BASED ENTRY

Your vet told you the stage.

We'll help you know what to do next.

Each kidney disease stage calls for a different approach.
Choose your cat's stage to access a tailored care guide.

Stage 1

Early signs · Proactive daily support

Often subtle — daily monitoring and prevention-focused nutrition.
View Care Guide →
MOST COMMON

Stage 2

Mild decline · Structured routine support

The most common diagnosis stage. Build a consistent care routine.
View Care Guide →

Stage 3

Intensive daily care · Close monitoring

Multi-symptom management, hydration focus, vet collaboration.
View Care Guide →
Does your cat also have inflammation or cancer-related concerns? Inflammation-Related → | Cancer-Related →
CASE STORIES

Stories From

Cat Guardians

Stage 2 & 3 journeys, including complex cases-showing
how structured routines helped support steadier, more comfortable days.
Stage 4 CKD Care

Soommu

Finding a Stable Daily Routine
Stage 3 CKD Care

Goro

Toward a More Stable Kidney State
PKD Care

Hawaii

A New AIM-Based Approach to Stability
Stage 3 CKD Care

Bianca

Finding Steady Comfort Through Daily Support
See All Stories →
CARE PATHS

Choose Your

Care Path

Kidney disease often comes with other challenges.
We've built care guides for each situation.
Kidney-Focused

Kidney-Focused

Designed for cats without other major health concerns who need care focused specifically on their kidneys.

For cats without other major conditions Start Care Guide →
Inflammation-Related

Inflammation-Related

Designed for cats with inflammation-sensitive conditions affecting the oral cavity, pancreas, joints, or gut, where immune balance should also be considered.

For cats with concurrent IBD, pancreatitis, or similar conditions Start Care Guide →
Cancer-Related

Cancer-Related

Designed for cats receiving cancer-related care, where kidney support requires more careful ingredient selection.

For cats managing cancer alongside CKD Start Care Guide →

About Greycoat Research

Q. What is Greycoat Research?

Greycoat Research is a feline health-focused company specializing in science-based supplements for cats.

We develop products designed to support kidney health through a research-driven approach and collaboration with veterinary professionals.

Q. What is the relationship between Greycoat Research and Dr. Toru Miyazaki?

In September 2023, Greycoat Research established an official collaboration with Dr. Toru Miyazaki in Japan.

Through this collaboration, we develop and manufacture pet products inspired by research from the AIM laboratory, along with ongoing technical consultation and research cooperation.

Q. Where can I read reviews of the Dr. Toru Protocol?

You can find customer reviews on the product page of the Dr. Toru Protocol.

Reviews for all other products are also available at the bottom of each product page on our website.

Q. How can I receive ongoing information about caring for cats with kidney concerns?

You can subscribe to the Greycoat Research email newsletter.
We share general care information for cats with kidney-related concerns on a regular basis.
Subscribe here

Q. Where can I find the full ingredient list of your products?

Greycoat Research provides full ingredient transparency for all products.
You can find the complete ingredient list at the bottom of each product page on our website.

Free · 1:1 · No Pressure

Not Sure Where

to Start?

A kidney-focused advisor will review your cat's history and build a plan — free, 1:1, no pressure. We're here to help you feel less alone in this.
Start Free Consultation
No pressure. No upsell. Just clarity about what your cat needs.

Subscribe to the Exclusive Greycoat Program

Get expert-backed kidney care insights—delivered weekly to your inbox.

  • Weekly Updates – trusted tips on lab trends, hydration routines, and dietary care
  • Exclusive Guides – insights into kidney disease, anemia, HCM, and pancreatitis
  • CKD ChatGPT – early access to our personalized AI care tool, launching soon
  • Case-Based Advice – real-world learnings from over 3,500 1:1 consultations

Start caring with confidence and stay one step ahead in your cat’s kidney journey.

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