OUR LEGACY IS THEIR FUTURE
Your pet's gut health requires more than a probiotic.
While most probiotics introduce only limited lab-grown bacteria, Legacy Biome FMT capsules help restore the richness, diversity, and balance of your pet’s microbiome, the way nature intended.
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4.8
From 88 verified product reviews
Vet-Trusted
Recommended by integrative vets
Small Batch
From our network of donors
FMT capsules for dogs and cats.
Our Legacy Biome FMT supplements are sourced from a small network of donors whose names we know. Our donors are rigorously screened before it reaches your pet.
BESTSELLER
Healthy Gut Restore for Dogs
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Healthy Gut Restore for Cats
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RigorouslyScreened Donors
Veterinarian Recommended
Science-Backed Ingredients
Fast Shipping Within US & Canada
FMT can also help your pet with:
- Ongoing digestive imbalance (dysbiosis)
- Chronic diarrhea
- Inflammatory Bowel Disease (IBD)
- Clostridium overgrowth
- Food sensitivities
- Skin and allergy issues
- General gut restoration
- Supporting a healthy gut as your pet ages
About Our Donor Testing
Every batch starts with a healthy donor.
Every batch of FMT undergoes comprehensive safety screening and quality verification to ensure purity, consistency, and responsible sourcing. And it all starts with analyzing our donors to ensure they're at optimal health.
About our donor testing.
Every batch of FMT undergoes comprehensive safety screening and quality verification to ensure purity, consistency, and responsible sourcing. And it all starts with analyzing our donors to ensure they’re at optimal health.
- Parasite screen with Giardia
- PCR fecal screen
- Microbiome analysis
- Heartworm/ehrlichia/lyme/anaplasma with quantitative C6 antibody test
- Full-spectrum blood/urine/fecal panel
- Vaccine titers
- Diet analysis (if needed)
How donor testing supports our FMT products.
- Our FMT products are sourced exclusively from rigorously screened donor dogs and cats within our Legacy Donor Network.
- Each product is derived from a stable, multi-generational donor lineage to support consistency and microbiome diversity.
- We produce under strict quality-control protocols, including comprehensive pathogen screening and health monitoring.
- Donors maintain a nutrient-dense, minimally processed diet designed to support gut health.
- Donors are raised in a low-toxin environment that prioritizes natural health and microbiome preservation.
- Legacy Biome’s FMT products were developed to provide a balanced microbial community reflective of healthy canine and feline gut function.
We've made it easier to stay consistent with your pet's long-term gut health.
Most pet parents report seeing the best outcomes with consistent dosing over 2–6 months depending on the severity of the symptoms they are treating. Our 3-bottle supply covers a full mild-to-moderate protocol, and subscribers save 10% on every order with free shipping.
Not sure how many bottles your pet will need?
MILD MODERATE
(1-3 MONTHS)
Diarrhea, itchy skin, bloating, gas, bad breath, post-antibiotic recovery.
1 Bottle30-Day+ Supply
SEVERE/ COMPLEX
(3-6 + MONTHS)
IBD, autoimmune, allergy-mediated, gut-brain conditions. Consult your vet.
2+ BottlesSubscribe and save
When in doubt, start with one bottle. You can always adjust as needed.
Hear what pet health experts are saying.
Dr. Judy Morgan
DVM, CVA, CVCP, CVFT, Nationally recognized integrative veterinarian, author, and educator
When Gaby developed antibiotic-resistant bacterial concerns, Dr. Morgan turned to Legacy Biome FMT to support her gut recovery.
Watch Dr. Morgan's Video
Melissa Natanson
Certified holistic pet health coach and canine nutritionist, host of Microbiome Matters — Where Pet Health Begins
Worried about getting your pet to take a capsule? Melissa and her dog Darla show just how simple it can be.
Read Darla's StoryTHE SAME SCIENCE APPLIED AT HOME
Transparency is part of the formula.
At Legacy Biome, we believe the quality of every capsule begins long before it reaches your pet. Our small, personally monitored network of donor dogs and cats are naturally raised on a species-appropriate raw diet, free from GMOs and gluten, and selected through rigorous health screening. This commitment to sourcing integrity is backed by science and shared openly, because you should know exactly what you're giving your pet and why it works.
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The science of FMT.
Fecal Microbiota Transplantation delivers thousands of beneficial microbes from a healthy donor directly to your pet's gut. Learn how FMT works at the microbiome level and why veterinarians are incorporating it - instead of probiotics - into treatment protocols.
Learn the Science
Importance of gut health.
A pet's gut does more than just digest food. It helps regulate their immune system, energy levels, and even organ function. Achieving gut health can help ensure a healthy, happy, and active life.
Explore Gut Health
Our donor network.
Every Legacy Biome capsule begins with a donor we personally know. Learn about our rigorous screening process, the standards every donor meets, and why donor integrity is the foundation of everything we do.
Meet Our DonorsJoin our newsletter.
Gut health tips, new guides and updates, straight to your inbox.
Small-batch FMT from donors we know by name. For dogs and cats who need more than a probiotic.
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