Greycoat Probiotics
9 kidney-focused strains balanced for stage 2 and 3 daily care. 2 billion CFU per capsule, formulated for cats.
$54.99
1
- 60-day Satisfaction guarantee
- Vet-reviewed
- 15% Off Your First Order · Sign in and use code KIDNEY at checkout
Kidney-focused probiotics, made for cats
For cats receiving kidney care, choose probiotics with kidney health in mind.
Why your probiotic choice matters for kidney care
- When kidney function declines, waste products can build up in the body.
- Some substances made by gut bacteria are converted into uremic toxins, which can place an extra burden on the kidneys.
- With this connection in mind, we included MFM30-3 and MFM18—2 strains studied together in cats classified as IRIS stages 2–3 at National Taiwan University.
- Research: The feline gut–kidney connection — Summers et al., 2019
- Research: 2-strain study in cats — Huang et al., 2025
Expert review backed by experience in feline kidney care
- Greycoat Research has supported cat parents through more than 5,000 kidney nutrition consultations.
- Our feline probiotic formula was reviewed by veterinarians, pharmacists, and nutrition specialists.
- Have questions about giving it with medication or other supplements? Visit Consultation for guidance on compatibility and effective use.
- Brand-wide consultation total shown on our official website, October 2026.
Real experiences with energy, well-being, and daily feeding
Susan B.
U.S.
“An increase in energy and playfulness.”
Margaret
U.S. · Cat approximately 18 years old · Stage 2
“I can tell she feels pretty good.”
Ilsooni’s owner
South Korea · Age 3 years, 5 months · Kidney issues since birth
Ilsooni had refused other probiotics.
“But to my surprise, she ate it without any hesitation.”
- Excerpts from customer reviews and care stories on our official website. Individual experiences vary.
9 strains for kidney care, with 2 billion CFU guaranteed
- Formulated for cats receiving kidney care or whose kidney test results are becoming a concern.
- Our 9-strain blend includes MFM30-3 and MFM18, the 2 strains studied together in cats.
- 2 billion CFU per capsule, guaranteed through expiration when stored as directed. No refrigeration needed.
- Suitable for cats 6 months and older, including for everyday kidney health support.
- CFU is a measure of live probiotic microorganisms.
Open the capsule and mix into food or a treat
- Give 1 capsule daily, at any weight, alongside your cat’s diet and hydration routine.
- Preferably before a meal, mix the powder into a small amount of their usual food or a lickable treat.
- The powder has very little taste or smell. You can also give the capsule whole.
Product Details
- Product
- Greycoat Probiotics
- Type
- Kidney-focused probiotics for cats
- For
- Cats 6 months and older
- Capsules per bottle
- 60 capsules
- Feeding Guide
1 capsule daily, at any weight
60 days per bottle
- Guaranteed count
- 2 billion CFU per capsule through expiration, when stored as directed
- Made in
- South Korea
- Shelf life
- 18 months from manufacture · Check the expiration date on your bottle
- Storage
- Cool, dry place away from direct sunlight · No refrigeration needed · Use as soon as possible after opening
Key ingredients
All 9 strains
L. plantarum Lp-115 · L. plantarum MFM30-3 · L. acidophilus · L. casei · L. paracasei MFM18 · B. longum · B. breve · B. lactis · S. thermophilus.
Guaranteed Analysis
| Constituent | Guaranteed value |
|---|---|
| Crude Protein (min) | 1.8% |
| Crude Fat (min) | 0.7% |
| Calcium (min) | 0.01% |
| Phosphorus (min) | 0.5% |
| Crude Fiber (max) | 4.8% |
| Crude Ash (max) | 10.7% |
| Moisture (max) | 14% |
A 60-day satisfaction guarantee
- If you’re not satisfied after giving the recommended daily amount for 60 consecutive days, we’ll refund the product price.
- For your first purchase on our official website, once per product type. Submit your request within 10 days of completing the 60-day period.
Shipping, customs duties, and payment processing fees are excluded. View guarantee terms
