Greycoat Calm
- 60-day Satisfaction guarantee
- Vet-reviewed
- 15% Off Your First Order
- Subscribe & Save — Plus Weekly Care Tips for Your Cat
Heart & Kidney Calm Support
A gentle formula designed to support relaxation when care routines add extra tension.
Repeated tension can add burden
For cats receiving heart or kidney care, heightened tension may add extra burden to the daily care routine.
Recommended For
- Cats with frequent vet visits for heart or kidney care
- Cats receiving stressful care routines, such as subcutaneous fluids
- Cats whose kidney care routine has become more demanding
How to Use
- Give 1 capsule per day, regardless of body weight.
- Best given before a meal.
- We recommend giving Calm after the day’s care routine is complete, before your cat settles down for the night.
- Some ingredients may have a strong taste, so giving the capsule whole is recommended.
Product Details
- Product Name
- Greycoat Calm
- Contents
- 60 capsules
- Form
- Capsule
- Duration
- About 60 days
- Ingredients
- Taurine, GABA, Microcrystalline Cellulose, Milk Thistle, L-Theanine, Berberine Extract, Blueberry Extract, Ascorbic Acid, Bromelain, Strawberry Extract, Tomato Extract, Chamomile Extract, Quercetin, Resveratrol, Pyridoxine
- Made in
- South Korea
- Storage
- Store in a cool, dry place away from direct sunlight
- Price
- $54.99per bottle
How Calm Supports Heart & Kidney Care
Calm is designed to support nervous system balance and cellular stability during rest.
For cats receiving ongoing heart or kidney care, this approach helps support a calmer internal environment during periods of repeated care-related stress.
Key Ingredients
GABA
Supports nervous system balance during periods of heightened tension.
L-Theanine
Supports relaxation as part of a calmer daily care routine.
Quercetin
Supports antioxidant balance and cellular stability during repeated care-related stress.
Berberine
Supports cellular energy balance as part of heart and kidney care routines.
Why Greycoat Research
5,000+ kidney nutrition consultations
Built through one-on-one guidance for cat guardians
15,000+ cats supported
Real-world experience across daily kidney care routines in Korea and Japan
Expert-reviewed formulas
Reviewed with input from veterinarians, pharmacists, and nutrition specialists
Compatibility at a glance
60-Day Satisfaction Guarantee
Try Intensive for 60 days. If you’re not satisfied, we’ll offer a full refund.
Every cat’s kidney care journey is different. We’re here to support you as you build a routine that feels right for your cat.
Reliable Global Shipping
All orders are carefully packed and shipped on business days.
We use the official postal network, including EMS and K-Packet, for reliable international delivery.
Estimated Delivery Time
- U.S.About 5 business days
- Other CountriesAbout 7–10 business days
Delivery times may vary due to customs and local postal conditions.
Cautions Before Use
Sensitive Stomach
Vomiting has been reported in fewer than 0.5% of cats in our internal records. Give after meals.
Pregnancy or Nursing
Not recommended for pregnant or nursing cats.
General Guidance
If your cat has a medical condition or is taking medication, consult your veterinarian before use.
