Best Probiotics for Dogs & Cats — 2025 DVM-Reviewed Buyer’s Guide

Zesty Paws® Probiotic Bites — Dogs & Cats

Format: Soft chews • Key actives: Multi-strain + DE111® (B. subtilis); pumpkin & papaya enzymes.
Best for: Everyday gut support, stool quality, gas/bloating, and post-antibiotic recovery.

Why I like it: Clinically studied DE111® probiotic + digestive enzymes for real-world results — and pets love the taste.

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Purina® Pro Plan® FortiFlora® — Dogs

Format: 30 sachets • Key strain: Enterococcus faecium SF68®.
Best for: Diarrhea, stress colitis, or digestive imbalance; highly palatable powder.

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Purina® Pro Plan® FortiFlora® — Cats

Format: 30 sachets • Key strain: Enterococcus faecium SF68®.
Best for: Stool quality, stress, or sensitive digestion.

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Ark Naturals® Gentle Digest — Dogs & Cats

Format: 60 capsules • Key actives: Bacillus coagulans + FOS.
Best for: Daily microbiome support for both cats and dogs.

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VetriScience® Gut Health (Probiotic Everyday) — Dogs

Format: Soft chews • Key actives: Bacillus coagulans + FOS.
Best for: Stool quality and digestive balance.

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Pet Naturals® Daily Probiotic — Dogs

Format: Soft chews • Key actives: Bacillus coagulans (BC30) + prebiotic fiber.

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Pet Naturals® Daily Probiotic — Cats

Format: Soft chews • Key actives: Bacillus coagulans (BC30) + prebiotic fiber.

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