VetriScience Extra Strength Gut Health Probiotic & Prebiotic Digestive Supplements for Dogs & Cats, Gas & Diarrhea & Immune Support, Easy-Open Capsules, 180 Count Review
By Marcus Bell · Dog nutrition editor · Published 2026-06-14 · Updated 2026-06-26
4.5(2,509)Amazon rating$50.47500+ bought last month
Our verdict
VetriScience Extra Strength Gut Health packs 7.5 billion CFU across seven bacterial strains plus FOS prebiotic fiber into an easy open capsule, and with 2,509 reviews averaging 4.5 stars it's one of the more proven multi strain options in this category.
Dogs dealing with occasional gas or loose stool who need a higher CFU count and a seven strain blend, packaged in a large 180 count bottle that covers months of daily use.
Skip if
You want a smaller trial size before committing, your dog can't take capsules, or you're looking for a single strain formula rather than a seven strain blend.
Form Capsule
Flavor Unflavored
Benefits Antioxidant
Best for Stomach
Breed size Large, Medium, Small
Weight 0.29 Pounds
Priced 102% above the category median ($24.99 across 128 tracked models)
Our scorecard
4.5/5overall
Owner rating4.5/5
4.5 average across 2,509 owner ratings
Popularity3.7/5
2,509 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog food and health supplements we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
["This capsule formula from VetriScience combines seven bacterial strains, including Lactobacillus acidophilus, Lactobacillus plantarum, Bifidobacterium longum, and Bifidobacterium bifidum, for a total of 7.5 billion CFU per capsule, plus 75 mg of FOS as a prebiotic fiber source. The label targets gas, diarrhea, and immune support, and it's marketed as apple free for dogs with that specific sensitivity.", 'At 180 capsules per bottle, this is built for long term daily use rather than a short trial, and the easy open capsule design is meant to make giving the supplement to both dogs and cats simpler for owners managing multiple pets.', 'Priced at $50.47, this lands on the higher end for a probiotic, but with 2,509 reviews averaging 4.5 stars and about 500 bought in the past month, it has one of the stronger review track records in this lineup.']
Pros
Seven strain blend delivering 7.5 billion CFU per capsule
Includes FOS prebiotic fiber alongside the probiotic strains
Large 180 count bottle covers extended daily use
Strong 4.5 star average across 2,509 reviews
Easy open capsule design and apple free formulation
Cons
Higher price point than smaller trial size probiotics
Capsule form won't work for dogs that refuse pills without help
180 count commitment is a lot to buy before knowing if it fits your dog
Specifications
Form
Capsule
Flavor
Unflavored
Benefits
Antioxidant
Best for
Stomach
Breed size
Large, Medium, Small
Weight
0.29 Pounds
Performance notes
At 7.5 billion CFU per capsule across seven distinct strains plus 75 mg of FOS prebiotic fiber, this formula has a higher microorganism count than many single strain probiotics, and the added fiber is meant to give the bacteria something to feed on once they reach the gut. The capsule format keeps each dose measured and consistent, which matters more with a multi strain blend than with a scoop of powder.
What buyers say
With 2,509 reviews averaging 4.5 stars and roughly 500 units bought last month, this has one of the larger, more established review bases in the probiotic category, suggesting consistent repeat use rather than a one time trial purchase.
The label lists seven strains, including Lactobacillus acidophilus, Lactobacillus brevis, Lactobacillus plantarum, Bifidobacterium longum, Bifidobacterium bifidum, Streptococcus thermophilus, and Lactobacillus casei, totaling 7.5 billion CFU per capsule.
Is this suitable for cats as well as dogs?
Yes, the product is labeled for both dogs and cats, though dosing should follow the package directions for your pet's size and species.
Can this help with diarrhea?
The label markets this formula toward gas and diarrhea support, but it's not a substitute for veterinary care. If your dog has ongoing or severe digestive symptoms, talk to your vet before relying on a supplement.
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