# Greycoat Probiotics

- URL: https://greycoatresearch.com/products/greycoat-probiotics
- Price: $54.99
- Availability: In stock
- Rating: 5 / 5 (28 reviews)

## 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](https://greycoatresearch.com/pages/consults) 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.”  
\* Mixed into a lickable treat with water and given daily.
* Margaret  
U.S. · Cat approximately 18 years old · Stage 2  
> “I can tell she feels pretty good.”  
\* Shared while using Greycoat Probiotics alongside dietary care, fluids, and other supplements.
* 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.”  
\* The powder was mixed into wet food for a cat sensitive to smells and textures.  
[Ilsooni’s care story](https://greycoatresearch.com/blogs/case-stories/ilsooni-s-stage-2-ckd-care-gentle-digestive-support-with-the-probiotics-protocol)
* 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](https://greycoatresearch.com/policies/refund-policy)