Stage 1 CKD Care

At least 66% of kidney function remains.
Management of Stage 1 CKD can begin with a single supplement.

Supplement

Stage 1 can be managed with Dr. Toru Protocol alone.

✔ Dr. Toru Protocol – AIM-based supplement

  • Built on the core mechanism of feline kidney disease
  • Formulated by Dr. Toru Miyazaki, a leading researcher on AIM protein
  • Used by over 10,000 cats worldwide

Diet & Hydration

For more proactive care, dietary management and hydration are essential.

✔ Diet

  • Renal prescription diets are not yet necessary at Stage 1.
  • Instead of excessive protein restriction, senior formulas are more appropriate.
  • Examples: Royal Canin Indoor 7+, Hill’s Senior Formula, etc.
※ Feeding small portions 3 times a day may help activate AMPK.

✔ Hydration

  • Place 2–3 water bowls in different areas of the home and replace the water daily.
  • Increase hydration by adding water to dry food or offering lickable treats and wet food.

Kidney Checkpoints

Regular check-ups at home and at the clinic are essential.

✔ At-Home Tracking

  • Track appetite and energy daily — sudden changes may indicate a problem
  • Track water intake — a sudden increase may be a warning sign
  • Weigh weekly — use the same time and conditions each time

✔ Veterinary Check-ups (every 6–12 months):

  • Blood tests — check creatinine, BUN, and other key markers
  • X-ray & ultrasound — assess kidney size, stones, and structural changes

Summary – Stage 1 Care

✔ Supplement

  • Start with Dr. Toru Protocol

✔ Diet & Hydration

  • Add dietary and hydration care for more proactive support

Complete Your Cat Care Routine

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Before & After on the Greycoat Program

These are real cases where the Greycoat Program was applied—especially in Stage 2 and 3 cats, when guardians were searching for a better way forward.
Take a look and see what parts of their journey might help shape your own routine.

See More Greycoat Case Stories →
  • [Stage 2] Ellie – CREA 2.01 → 1.37

    [Stage 2] Ellie – CREA 2.01 → 1.37

    All of Ellie's kidney levels improved considerably. Her creatinine fell from 2.01 to 1.37, her BUN from 35.7 to 30, and her SDMA from 26.9 to 13, indicating that she...

    [Stage 2] Ellie – CREA 2.01 → 1.37

    All of Ellie's kidney levels improved considerably. Her creatinine fell from 2.01 to 1.37, her BUN from 35.7 to 30, and her SDMA from 26.9 to 13, indicating that she...

  • [Stage 3] Napoleon - BUN 43 → 35

    [Stage 3] Napoleon - BUN 43 → 35

    Napoleon, a 14-year-old cat with Stage 3 CKD, showed significant improvement in creatinine and BUN levels after 5 months on the Greycoat Full Spectrum Care Set.His weight remained stable, appetite...

    [Stage 3] Napoleon - BUN 43 → 35

    Napoleon, a 14-year-old cat with Stage 3 CKD, showed significant improvement in creatinine and BUN levels after 5 months on the Greycoat Full Spectrum Care Set.His weight remained stable, appetite...

  • [Stage 2] Naro - CREA 2.3 → 1.9

    [Stage 2] Naro - CREA 2.3 → 1.9

    Despite his age and multiple chronic conditions, Naro’s health has noticeably stabilized since starting the Dr. Toru Protocol.His kidney values have remained steady for over a year—which, for us, is...

    [Stage 2] Naro - CREA 2.3 → 1.9

    Despite his age and multiple chronic conditions, Naro’s health has noticeably stabilized since starting the Dr. Toru Protocol.His kidney values have remained steady for over a year—which, for us, is...

  • [Stage 2] Rocky - BUN 30 → 23

    [Stage 2] Rocky - BUN 30 → 23

    NAME: Rocky Roo HOME: Idaho, USA DATE of Birth: April.1.2016 (9 years old) Condition: Stage 2  Today, we received some heartwarming news from peaceful Idaho, USA. Most cats with stage 2...

    [Stage 2] Rocky - BUN 30 → 23

    NAME: Rocky Roo HOME: Idaho, USA DATE of Birth: April.1.2016 (9 years old) Condition: Stage 2  Today, we received some heartwarming news from peaceful Idaho, USA. Most cats with stage 2...

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