Animal Biome Probiotics for Dogs with S Boulardii, Gut Maintain (60 Capsules), Triple-Action Small Dog Probiotics, Prebiotics & Phage Supplements for Gut Health, Firmer Stool & Diarrhea Support Review
By Marcus Bell · Dog nutrition editor · Published 2026-06-12 · Updated 2026-06-27
Animal Biome's Gut Maintain capsules combine probiotics, prebiotics, and phage ingredients aimed at firmer stool and diarrhea support, but this particular listing shows a 4.6 rating with no accumulated review count yet, so treat the star rating as unproven until more owners weigh in.
Owners of extra small or small dogs looking for a triple action capsule targeting stool firmness alongside general gut health.
Skip if
You want a supplement with an established public review history to lean on before buying, or you have a medium or large dog.
Form Capsule
Benefits Digestive Health
Breed size Extra Small, Small
Priced 80% above the category median ($24.99 across 128 tracked models)
Overview
This capsule takes a slightly different approach than most chews on this list, pairing probiotics with prebiotics and phage supplements, and it is marketed as a triple action formula meant to firm up stool and support diarrhea recovery, on top of general gut health. It is sized in Extra Small and Small breed options and comes 60 capsules to a bottle.
At $45.00 for 60 capsules, it is one of the pricier options here, and the S boulardii yeast strain, called out right in the title, is a well known addition in dog and human gut supplements for helping the microbiome recover from digestive upset.
This particular listing shows a 4.6 rating but no review count yet, meaning there is not a public track record of buyer feedback to check against. Bought last month figures are modest too, so it is a newer or lower volume seller compared to some of the market's more established names.
Pros
Includes S boulardii, a probiotic yeast strain often used for digestive upset recovery
Triple action formula combining probiotics, prebiotics, and phage ingredients
Capsule form, sized specifically for small breeds
Cons
No review count behind the listed 4.6 rating yet
Higher price point at $45.00
Only formulated for extra small and small dogs
Lower bought last month volume than most other products on this list
Specifications
Form
Capsule
Benefits
Digestive Health
Breed size
Extra Small, Small
Performance notes
The S boulardii yeast strain paired with phage ingredients suggests this formula is aimed more at recovering from an active bout of loose stool or diarrhea than at everyday maintenance, which fits its firmer stool and diarrhea support positioning.
What buyers say
With no review count showing yet, there is not a real buyer track record to point to here. The 4.6 figure on the listing should not be weighed the same as a rating built on thousands of reviews elsewhere on this list.
S boulardii is a probiotic yeast strain commonly used in gut health supplements, often associated with helping digestion recover after an upset stomach. This product includes it as one of its three main components alongside prebiotics and phage ingredients.
Why doesn't this listing show a review count?
This particular product page has not accumulated a visible review count yet, even though it shows a rating. That means there is not a large body of buyer feedback to review before you decide, so it is worth watching for reviews to build up or asking your vet before trying it.
Is this suitable for a medium or large dog?
No, this listing is formulated and sized for extra small and small dogs specifically. A bigger dog would need a different product or dosing from the brand.
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