Heart–Kidney Support
Greycoat Calm
Greycoat Calm
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Heart-Kidney Health in Cats
Cellular stability matters.
📌NOTICE: Customs duties for U.S. customers are covered by Greycoat Research.
Who It’s For
- Cats that need support for both heart and kidney care
- Cats whose hearts are strained by daily subcutaneous fluids
- Cats stressed by vet visits or daily care tasks
Why It’s Needed
Caring for both organs, the heart and the kidneys,
helps reduce strain on the heart.
It can also help lessen the daily burden on the kidneys.
How It Supports Heart and Kidney Health
Promotes deep, restorative sleep
to support recovery and stability
for heart and kidney cells.
4 Key Ingredients for Stability
✔ Tomato extract (melatonin)
- Supports deep, restorative sleep
✔ Berberis fruit extract (berberine)
- Helps support stable cellular energy
✔ GABA
- Helps ease heart-related strain
✔ L-Theanine
- Supports calmness and stress relief
Why Cell Stability Support Matters
When either the heart or the kidneys start to struggle,
both organs can feel the added burden.
In these moments,
supporting cellular stability first helps the organs handle daily stress
more comfortably.
What You May Notice
- More relaxed, comfortable nights for your cat
- During the day, a bit more energy and a steadier mood
- And for you, a little more ease and reassurance
How to Use
✔ When to Give
- 1 capsule once daily, right before the guardian goes to bed.
✔ How to Give
- Give in capsule form —some ingredients may taste bitter.
✔ Tips
- Add a small amount of liquid treat to the tip of the pill gun.
- Give the capsule, then offer a small reward treat.
- Keep the nighttime routine quiet and consistent.
Why Guardians Choose Greycoat Calm
- Because it gives their cat gentle support even at night
- Because a single capsule makes a night-time routine easy to keep
- Because daytime may show a bit more energy — and that feels reassuring
About Greycoat Research
We develop science-led supplements with veterinarians, pharmacists, and researchers.
We focus on long-term kidney care and chronic-condition support for cats.
Scientific & Clinical Advisors
✔ Dr. Toru Miyazaki
AIM Advisory
✔ Dr. Motoo Kobayashi (DVM)
Heart & Kidney Care
✔ Dr. Jae-Young Kim (DVM), Alex Shin (Pharm.D)
Internal Review
A Note for Guardians
Caring for a cat with heart or kidney needs can feel tiring at times.
A simple night-time routine may help bring a little more comfort to your evenings.
FAQ
Q. Can I give this with Dr. Toru, Intensive, or Probiotics Protocol?
Yes. It’s designed to fit naturally into those routines without adding stress.
Q. How many capsules per day?
1 capsule daily (regardless of weight).
Q. What if my cat dislikes capsules?
Using a pill gun with a tiny liquid treat can make the process smoother.
Start the Routine
A gentle night-time step that helps the whole day feel smoother.
Begin your cat’s heart–kidney support routine tonight.
60-Day Satisfaction Guarantee
If you’re not satisfied after 60 days of use, we’ll offer a full refund.
Each formula is developed with a science-led nutritional approach.
Still, feline kidney care is a journey — and we’re here with you every step of the way.
Fast, Reliable Global Shipping
Product Details
- Product Name: Greycoat Calm
- Contents: 60 capsules
- Ingredients: Taurine, GABA, Milk Thistle, L-Theanine, Berberine, Blueberry, Ascorbic Acid, Strawberry, Tomato Extract, Chamomile, Quercetin, Resveratrol, Pyridoxine, Microcrystalline Cellulose
- Price: $54.99
- Made in: South Korea
- Feeding Duration:
→ 1 capsule per day regardless of weight: 1 bottle lasts approx. 2 months - Form: Capsule
- Storage: Store in a cool, dry place away from direct sunlight
Our mission is to advance feline kidney health.
— Greycoat Research
Greycoat Calm
FAQ
Can I give this with Dr. Toru, Intensive, or Probiotics Protocol?
Yes. It’s designed to fit naturally into those routines without adding stress.
How many capsules per day?
1 capsule daily (regardless of weight).
What if my cat dislikes capsules?
Using a pill gun with a tiny liquid treat can make the process smoother.