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Reduces Kidney Stress by Managing Uremic Toxins
Are Uremic Toxins Building Up in Your Cat with Kidney Disease?
If your cat’s condition hasn’t improved despite doing everything right—AIM support, AMPK support, prescription diets, and fluids—it may be time to look at another factor: uremic toxins.
When energy stays low, appetite doesn’t return, and condition just won’t stabilize, it could mean toxins are still building up in the body, prolonging the burden of kidney disease.
Uremic Toxins Start in the Gut
Most guardians focus solely on their cats’ kidneys, but at Greycoat Research, we also consider their gut.
Some of the waste products the kidneys work hardest to remove can actually be reduced earlier in the digestive tract, such as gut-derived uremic toxins (GDUT).
When gut inflammation is present, or when toxins leak into the bloodstream (as in "leaky gut"), that burden passes directly to the kidneys.
This connection is known as the Gut-Kidney Axis, and Probiotics Protocol is designed to help block that pathway.
Greycoat Research’s Answer to Toxin Buildup
Probiotics Protocol isn’t just for gut health.
Probiotics Protocol is a probiotic supplement formulated specifically for uremic toxin management in cats with kidney disease.
Our formula contains 9 carefully selected probiotic strains, each backed by research and chosen for their ability to support gut integrity, immune balance, and toxin reduction.
Each capsule of Probiotics Protocol delivers a guaranteed 2 billion CFU (colony-forming units) to your cat.
Our 9-Strain Formula
Strain |
Primary Role |
L. plantarum |
Gut lining support |
L. acidophilus |
pH balance and comfort |
L. rhamnosus |
Gut barrier integrity |
L. casei |
Microbial balance and reactivity |
B. longum |
Resilience and flora diversity |
B. bifidum |
Digestive consistency |
B. lactis |
Immune modulation |
S. thermophilus |
Nutrient breakdown |
L. bulgaricus |
Flora reinforcement |
Selected for synergy, not just count.

Feeding Guide
Recommended for These Cats and Guardians
What Cat Guardians Are Saying
What We’ve Learned from Over 1,300 Consultations
Greycoat Research has supported more than 1,300 cats with kidney disease through one-on-one consultations.
The most common question guardians ask is:
“What more can I do to help my cat feel better?”
Again and again, the answer has been: the right combination.
Our Most Effective Combination—Backed by 1,300 Consultations
- Dr. Toru Protocol
Supports waste clearance through AIM activation - Intensive Protocol
Antioxidants + AMPK activation to support cell survival - Probiotics Protocol
Reduces uremic toxins absorbed through the gut to ease the burden on the kidneys
This combination has been used in many cases where cats not only stabilized—but began to regain energy and improve in overall condition.
60-Day Money-Back Guarantee
We understand—trying something new can feel uncertain.
That’s why we offer a 60-day refund guarantee if you don’t feel it made a difference.
If you're not satisfied after 60 days of consistent use, we’ll provide a full refund (excluding shipping).
The process is simple—just fill out a short return form.
At Greycoat Research, we believe results speak louder than words.
And if you’re not satisfied, we’ll take full responsibility—right to the end.
Fast, Safe, and Reliable Global Shipping
Greycoat Research delivers supplements as quickly and safely as possible—so your cat doesn’t have to wait.
Orders are shipped out every weekday. It may take up to 10 days (5 for the US) to receive your order once it has been shipped.
Product Details
Ease Your Cat’s Kidney Burden Through Gut Care
Drawing from over 1,300 consultations, Greycoat Research created supplement combinations that support kidney health by starting where the strain begins—the gut.
AIM, AMPK, and gut-based toxin care: managing all three is the foundation of stable, long-term kidney health support for cats.
Probiotika-Protokoll










Einklappbarer Inhalt
Instruction & Dosage
Guaranteed Analysis
FAQ
Can I feed Probiotics Protocol to my dog?
While Probiotics Protocol was designed to improve the kidney functions of cats, it can be administered to dogs as well.
The recommended dose for dogs under 8 kg* is 1 capsule of Probiotics Protocol a day. If your dog is over 8 kg, please contact us for a free consultation so that we can determine the optimal dose of Probiotics Protocol for your dog.
*Approx. 17 lbs
Can I feed Probiotics Protocol to my elderly cat?
Yes, you can. Probiotics Protocol can be administered to cats regardless of age. However, if you have any concerns about your cat, please reach out to us for a free expert consultation so we can work with you to see if Probiotics Protocol is right for your cat.
Can I feed Probiotics Protocol to my pregnant cat?
Yes, you can. However, if you have any concerns about your cat, please reach out to us for a free expert consultation so we can work with you to see if Probiotics Protocol is right for your cat.
What is the expiration date of Probiotics Protocol?
The expiration date for Probiotics Protocol is 18 months from its production.
I have a question that’s not in the FAQ!
If your cat is currently taking many other supplements, and you have questions regarding their compatibility with Intensive Protocol, please click on the Consultations tab and enter the following information so we can better assist you and provide you with an accurate answer.
- Your cat’s health, blood test results, what supplements your cat is currently taking, any existing complications, etc.