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Kidney Core

Kidney-Focused Set

Kidney-Focused Set

Regular price US$144.52
Regular price US$160.58 Sale price US$144.52
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Kidney-Focused Set
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Kidney-Focused Care

Designed for cats without major health concerns.
For cats who need kidney-focused care.

Who is this set for?

  • For cats receiving structured kidney care from Stage 1 to Stage 3.
  • For cats showing subtle changes in appetite or energy levels.
  • For cats without inflammation-related or cancer-related conditions.

The core kidney-focused approach

AIM-based support

Supports natural waste clearance
to help reduce kidney burden.

Kidney cell environment support

Supports kidney cell health
and a stable cellular environment.

Gut–kidney axis support

Supports gut balance to help reduce toxin-related burden on the kidneys.

Recommended Kidney-Focused Sets

✔ Kidney Core Care Set

A focused care combination designed to support ongoing kidney health.
A more comprehensive combination than Dr. Toru alone.
Dr. Toru · Intensive · Probiotics

✔ Kidney + Appetite Care Set

For cats with kidney concerns and reduced appetite.
Designed for both appetite and weight support.
Dr. Toru ·  Appetite ·  Probiotics

Key products in the kidney-focused sets

✔ Greycoat Dr. Toru

An amino acid formula based on AIM research.

✔ Intensive Protocol

A multi-ingredient formula focused on AMPK modulation and antioxidant balance.

✔ Greycoat Appetite

Supports cellular health and helps support appetite and weight maintenance.

✔ Probiotics Protocol

A probiotic formula specialized for kidney care.

Compare the Difference

Category Greycoat Dr. Toru Kidney-Focused Set
Focus AIM-based support for waste-processing balance Comprehensive support for kidney balance and energy metabolism
Formula Structure 1-part system 3-part system (AIM, Cellular Energy, Toxin Relief)
Key Function Supports the body’s natural waste-clearing system Supports appetite, vitality, and internal balance
Care Goal Foundational support Encouraging better condition and stability

What We Hope to See: 60-Day Timeline

Before

After 60days

Reduced appetite or mild fatigue

Eating more willingly and moving with greater energy

Occasional vomiting or irregular stool

More consistent digestion and bowel regularity

Dull or dry coat

Brighter, smoother coat with improved hydration

Low energy levels

Improved responsiveness and daily activity

What Guardians Are Saying

These cats follow Greycoat’s structured Kidney Care Program — a nutritional approach designed to support comfort and energy balance.
Their guardians chose to share their stories to help others facing similar challenges.

Why Guardians Choose This Set

For guardians who value structure, balance, and steady progress:

  • Structured kidney support
  • Gentle, comprehensive formula synergy
  • Built for steady, healthy progress

How to Use the Set

Greycoat Dr. Toru

  • Under 3 kg: 1 capsule/day
  • Over 3 kg: 2 capsules/day
  • Can be given whole or opened and mixed into food or a lickable treat

Greycoat Appetite

  • Under 3 kg: 1 capsule/day
  • Over 3 kg: 2 capsules/day
  • Best given whole for ingredient stability

Intensive Protocol

  • 1 capsule/day
  • Best given whole for ingredient stability

Probiotics Protocol

  • 1 capsule/day
  • Can be given whole or mixed into food or a lickable treat

Each formula plays a different role and is designed to work together for daily use.

About Greycoat Research

Greycoat Research focuses on long-term kidney care for cats.
Our formulas are informed by:

  • 3,500+ one-on-one kidney nutrition consultations
  • Feeding data from 10,000+ cats in kidney care

Each formula is developed using carefully selected ingredients
and reviewed through a structured, multidisciplinary process.

Expert Review & Advisory

Greycoat Research formulas are reviewed with input from:
Veterinarians, pharmacists, and veterinary nutrition specialists.

✔ Jaeyoung Kim, DVM, PhD

Taeneung Cat Specialty Animal Hospital

✔ Motoo Kobayashi, DVM, PhD  

Kobayashi Animal Preventive Medicine Center

✔ Alex Shin, Pharm.D

7+ years in animal supplement design and consulting.

60-Day Satisfaction Guarantee

If you’re not satisfied after 60 days of use, we’ll offer a full refund.
Each formula was developed with a scientifically designed nutritional approach.
Still, feline kidney care is a journey — and we’re here with you every step of the way.

Fast, Reliable Global Shipping

All orders are carefully packed and shipped on weekdays.
We deliver through the official Post Office network (EMS & K-Packet) for trusted, reliable delivery.

Estimated delivery times:

  • U.S.: about 5 business days
  • Other countries: about 7–10 business days

Product Details

  • Product Name: Kidney-Focused Set
  • Contents: 3 bottles (60 capsules each)
  • Duration:
    → Greycoat Dr. Toru: about 1–2 months
    → Intensive, Probiotics: about 2 months
  • Note on Greycoat Dr. Toru:
    → At a daily intake of 2 capsules, one bottle provides approximately 1 month of use.
    → An additional bottle is recommended to cover a full 2-month routine.
  • Price: $144.42 (7.7% off; regular $156.58)
  • Form: Capsule
  • Made in: South Korea
  • Storage: Store in a cool, dry place away from direct sunlight.

Our mission is to advance feline kidney health.

— Greycoat Research

FAQ

Is the Kidney-Focused Set safe for cats with kidney disease?

Yes. The Kidney-Focused Set includes three formulas—Greycoat Dr. Toru, Intensive Protocol, and Probiotics Protocol—each designed to support feline kidney health without overloading the system. These supplements can be safely used for cats with early-stage to moderate CKD, or those showing early signs of imbalance.

Can I give all three products in the Kidney-Focused Set at the same time?

Yes, they can be used together. You may give them at once, or follow this recommended schedule for optimal support:

  • Morning before meals: Probiotics Protocol
  • Morning after meals: Greycoat Dr. Toru
  • Evening after meals: Greycoat Dr. Toru + Intensive Protocol

For picky eaters, Greycoat Dr. Toru and Probiotics capsules can be opened and mixed with food. Intensive Protocol is best given whole for ingredient stability.

How is the Kidney-Focused Set different from other kidney supplements?

Unlike standard kidney supplements that only focus on general support, this 3-part system targets three critical areas of feline kidney wellness:

  • AIM-based waste clearance (Greycoat Dr. Toru)
  • AMPK and cellular energy balance (Intensive Protocol)
  • Toxin burden reduction (Probiotics Protocol)

These were developed with feline kidney experts and are used by guardians who want structured, proactive care.

When should I start using the Kidney-Focused Set?

The earlier, the better. Starting at the first sign of decreased appetite, energy, or stool changes—even if labs are stable—can help support long-term balance and delay further decline.

Is the Kidney-Focused Set suitable for senior cats?

Yes. All three formulas are designed for adult and senior cats. Many older cats benefit from earlier, multi-pathway support before symptoms become severe.

Can I combine the Kidney-Focused Set with a renal diet?

Yes. The set can be used alongside most prescription renal diets. If you're using multiple supplements or medications, we recommend a free consultation for personalized guidance.

Is the Kidney-Focused Set compatible with medications?

Generally, yes. However, if your cat is on prescription drugs, we recommend consulting your veterinarian or requesting a free compatibility review from our team.

What’s the daily dosage for the Kidney-Focused Set?

  • Greycoat Dr. Toru:
     – Under 3kg (6.6 lbs): 1 capsule/day
     – Over 3kg: 2 capsules/day
  • Intensive Protocol: 1 capsule/day
  • Probiotics Protocol: 1 capsule/day

All capsules are formulated for feline physiology and can be given daily.

Can dogs use the Kidney-Focused Set?

Some components, such as Greycoat Dr. Toru and Probiotics Protocol, can be used in small dogs.

  • Under 3kg (6.6 lb): 1 capsule/day
  • Over 3kg: 2 capsules/day

Please consult us for a tailored plan for dogs over 8kg (17.6 lbs).
Note: Intensive Protocol was designed specifically for cats.

What is the shelf life of the Kidney-Focused Set?

  • Greycoat Dr. Toru: 24 months from manufacture
  • Intensive Protocol: 24 months from manufacture
  • Probiotics Protocol: 18 months from manufacture

Store in a cool, dry place. No refrigeration is required.