Digestion & Probiotics Supplements

Probiotics, prebiotics, and digestive enzymes to support gut health and regularity.

Reviews

Nutramax Proviable-DC

A 7-strain synbiotic with 5 billion CFU and FOS prebiotic from the makers of Cosequin. Where FortiFlora excels at acute diarrhea with one studied strain, Proviable-DC offers broader microbiome support — the upgrade for dogs that need more than single-strain coverage.

Best Overall

Purina Pro Plan FortiFlora Canine Probiotic

4.5

The most vet-recommended dog probiotic on the market — a single-strain, microencapsulated formula with a long clinical track record for managing diarrhea and supporting gut health. The go-to when a vet says 'get a probiotic.'

Best Of Guides

Best Digestion Supplements for Dogs (2026): Tested and Ranked

We evaluated the top probiotics and digestive supplements for dogs by strain quality, delivery technology, clinical backing, and real-world results. Here's what actually supports a healthy gut.

See our picks