Night-Time Kidney Care
Greycoat Calm
Greycoat Calm
Couldn't load pickup availability
Night-Time Kidney Care
Daytime care is full—night-time is the gap.
Greycoat Calm completes daily kidney care at night.
Why Night-Time Care Matters
Care Pauses at Night — The Body Doesn’t
At night, most care routines pause—
but the body doesn’t.
For many cats, this creates a quiet gap in otherwise consistent care.
What Night-Time Routines Revealed
Across more than 3,500 kidney care consultations,
Greycoat Research observed a clear pattern
: some guardians extended care into the night to maintain a more continuous daily routine.
Designed for That Gap
Greycoat Calm was developed from these observations
as a nutritional option for night-time care.
Who Should Consider Night-Time Kidney Care
If any of these feel familiar,
it may be time to consider how the night fits into your cat’s care.
- Subcutaneous fluids or medications are already part of the daily routine
- Daytime care feels full, but the night still feels unaddressed
- Night-time breathing or rest has started to draw more attention
In these cases,
Greycoat Calm can be used
as a simple final step to bring the day’s care together during the night.
What Is Greycoat Calm For?
Greycoat Calm is a night-time kidney care supplement,
developed from real-world kidney care consultations.
Designed for Night-Time Kidney Care
At night, the body enters a more recovery-oriented phase,
where cellular stability becomes especially important.
Greycoat Calm is designed to support autonomic balance,
helping ease the tension accumulated throughout the day.
Day and Night May Play Different Roles in Care
When kidney or heart care is ongoing,
daytime and night-time care often serve different purposes.
Daytime Care: Energy-Focused Support
During the day, care often focuses on activity, metabolism, and overall energy flow.
Night-Time Care: Stability-Focused Support
Greycoat Calm is designed for night-time use,
considering the activity and tension
that build up throughout the day,
with a focus on cellular stability.
4 Key Ingredients for Night-Time
Blueberry Extract (Standardized for Pterostilbene)
- Supports antioxidant balance and cellular stability at night.
Indian Barberry Fruit Extract (Source of Berberine)
- Supports cellular energy balance at night.
GABA
- Supports autonomic balance and eases night-time tension.
L-Theanine
- Supports a calmer night-time state after daily stress.
How to Use Greycoat Calm
After completing your daytime care routine, give 1 capsule at night.
When care naturally pauses,
Greycoat Calm helps carry it through the night.
If Subcutaneous Fluids Are Part of Care
Night-time care may also be worth considering.
Changes After Subcutaneous Fluids
After subcutaneous fluids,
the body goes through a period of adjustment
as it responds to a sudden change in hydration.
Designed for Ongoing Circulatory Balance
Greycoat Calm is designed
with consideration for the fluid and circulatory load
that may follow subcutaneous fluid care.
Simple Feeding Guide
How to give
Greycoat Calm is not about adding more care—
it is designed as a final step
to help bring together the care you are already providing.
- Once daily, at night, just before your routine ends
- 1 capsule per day
- Some ingredients may have a strong taste, so giving the capsule whole is recommended
Helpful Tips
- Use a pill gun to give the capsule whole
- Lightly coat the capsule with a liquid treat if needed
- Offer a small reward treat after administration
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
- Seijo Kobayashi Animal Hospital
Alex Shin, Pharm.D
FAQ
Q. Why is Greycoat Calm given at night?
Daytime care often includes meals, supplements, medications, and fluids.
Greycoat Calm is designed for night-time use,
when care routines are more likely to pause.
Q. Is Greycoat Calm a sleep aid or sedative?
No.
Greycoat Calm does not induce sleep or sedation.
It is a nutritional supplement designed with a focus on
night-time cellular stability and easing accumulated tension.
Q. Can Greycoat Calm be used with other products?
Yes.
It is designed to be used alongside other Greycoat Research kidney care products.
If using products from other brands, ingredient overlap may occur,
so prior consultation is recommended.
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
All orders are carefully packed and shipped on weekdays.
We ship via official international postal services (EMS & K-Packet).
Estimated delivery times:
- U.S.: about 5 business days
- Other countries: about 7–10 business days
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
Why Greycoat Calm
After the day’s care is complete,
Greycoat Calm gently carries that care into the night.
- Designed with consideration for the night hours after daily care.
- Focused on cellular stability for the kidneys and the heart,
and easing accumulated tension. - Can be used alongside
subcutaneous fluids, medications, and existing supplement routines. - 1 capsule once daily, at night —
designed to complete the day’s care.
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.