Real stories from guardians who share their cat’s health updates with Greycoat Research.
About Greycoat Program
Since July 2025, Greycoat Research has been running the Greycoat Program in Korea and Japan, helping guardians support daily kidney care at home.
Through the Greycoat Program, our veterinarians and pharmacists share practical, general guidance based on routine logs and questions, helping guardians build a steady daily routine at home.
Below is a blog post written from the perspective of Hawaii’s guardian, “Ms. Ha”
Note: “Ms. Ha” is a pseudonym used to protect the guardian’s privacy.
Hawaii's Story
Hello, I am Hawaii’s guardian, Ms. Ha.
In our home, we live with three white cats: Europe, Asia, and Hawaii.
Today, I’d like to introduce Hawaii.
Hawaii is a 4-year-old cat living with PKD (polycystic kidney disease).
He was diagnosed at one year old, when an ultrasound showed a cyst in his right kidney and early signs of declining kidney function.
Since then, we’ve continued regular follow-up tests.
Earlier this year, a routine checkup showed that a cyst in Hawaii’s left kidney had grown.
That’s when we began supportive care with Greycoat Research supplements.
When I first heard the ultrasound findings, I felt overwhelmed.
What I wanted most was not a dramatic change. I wanted defense and maintenance.
I wanted to focus on a routine I could maintain and keep Hawaii comfortable day to day.
The story below is based on my daily observations and records during the 134 day care period.
This is not medical advice, not a substitute for veterinary care, and not a guarantee of results.
Every cat’s condition is different. Guardians should consult their veterinarian for diagnosis, monitoring, and care decisions.
- Name: Hawaii
- Age: 4 years
- Sex: Male
- Home: Korea
- Condition at start: PKD diagnosis, right kidney cyst, reduced kidney function
- Greycoat Program period: July 16, 2025 to October 15, 2025
1. Changes in Hawaii’s Bloodwork
For PKD care, the core is defense and maintenance.
Our goal, both mine and Greycoat Research’s, was to support long - term steadiness and help Hawaii stay comfortable day to day.
After the Greycoat Program ended, at Hawaii’s November 24 checkup, the veterinarian noted two things that brought me real relief.
Hawaii’s creatinine (CREA) decreased from 1.9 in August to 1.3, and the veterinarian noted that the cyst size had remained well maintained without further enlargement.
What mattered most to me was building a routine I could maintain and using checkups to stay informed.
From this point downward, only the English conversation is shown because the full image is too long. The original Korean conversation can be found at the very end.
This does not indicate a treatment effect, and every cat’s condition can change in very different ways. Please consult your veterinarian for diagnosis, monitoring, and care decisions.
| August | November | |
| CREA | 1.9 | 1.3 |
| BUN | 17 | 18 |
| WEIGHT | 6.0kg | 6.37kg |
[March 2025 Ultrasound]
[August 2025 Ultrasound]
[November 2025 Ultrasound]
2. How Hawaii Stayed Steady for 134 - Days
I did not try to do everything at once.
Instead, I focused on fast response, careful observation, and a routine I could realistically maintain while working full time.
✔ Fast response and quick adjustments
In the beginning, Hawaii was not used to capsule routines, so there were trial and error moments.
When Hawaii vomited, I shared the situation right away and adjusted timing based on the Greycoat team’s guidance. That immediate feedback loop helped me stay calm and act quickly instead of guessing.
✔ Careful observation and steady routines
For PKD cats, weight loss or repeated vomiting can be a warning signal.
I watched for small changes, including seasonal hair shedding and increased hairball vomiting.
Whenever something felt different, I discussed it with the Greycoat team so we could respond early.
Even when I became sick with COVID and struggled to function normally, I still tried to protect Hawaii’s routine as much as possible.
If there was a day when I could not follow the routine perfectly, I returned to it immediately as soon as I recovered and checked Hawaii’s condition closely.
When the water bowl looked emptier than usual, I did not assume Hawaii drank more right away.
I considered whether the weather was dry and water had evaporated, and I checked urine output too.
That habit of observing both numbers and environment helped support Hawaii’s stability.
3. Hawaii’s Daily Care Routine
While working full time, I kept a structured daily rhythm for Hawaii.
The routine focused on consistent intake, steady meal timing, and supplement timing that Hawaii could tolerate comfortably.
| Period | Time | Feeding Content | Note |
| Morning | 7:00 | Probiotics Protocol | 1 Capsule |
| Breakfast | |||
|
Dr. Toru Protocol |
1 Capsule | ||
| Omega-3 | Every other day | ||
| Evening | 9:00 | Dinner | |
| Dr. Toru Protocol | 1 Capsule | ||
| Intensive Protocol | 1 Capsule | ||
| Before Bed | Greycoat Calm | 1 Capsule |
4. “Thanks to you, I feel much more reassured. Thank you for always taking such careful care of us.
When I first heard about the cyst, I felt lost.
But by keeping the daily schedule and making small adjustments with the team, Hawaii was able to gain healthy weight and, most importantly, maintain cyst size without further growth.
Where to Find Hawaii’s Full Story
You can read more about Hawaii’s kidney care journey on his Instagram.
Ms. Ha (Hawaii's guardian)
Conversation Log with Ms. Ha
The following conversation is the original, unedited exchange between Ms. Ha (Hawaii’s guardian) and our team.
Through an instant messaging app, we quickly shared updates on his condition and adjusted his care routine accordingly.
Note: “Ms. Ha” is a pseudonym used to protect the guardian’s privacy.
