10 Best Probiotic For Dogs 2026 in the United States

Purina Pro Plan FortiFlora is a popular probiotic supplement designed to support digestive health and manage diarrhea in dogs of all breeds and life stages. It comes as easy-to-feed chewable tablets with a tasty liver flavor, making it convenient for most dogs to take daily. The product is backed by a trusted veterinary brand, Purina, known for quality and veterinarian recommendations, which adds confidence in its effectiveness and safety.

FortiFlora contains live beneficial bacteria that help balance your dog’s gut and promote a strong immune system, with added antioxidants and vitamins like vitamin C and zinc for extra support. The tablets are shelf-stable but should be stored as directed to maintain potency. The product is specifically targeted at managing diarrhea and digestive upset rather than general probiotic use, so consulting your vet before starting is important. Also, some dogs might not find the tablet palatable, despite the liver flavor.

FortiFlora serves as a solid choice for dog owners seeking a trusted, vet-recommended probiotic to help manage digestive troubles and support overall gut health.

Purina Pro Plan Veterinary Supplements FortiFlora is a popular probiotic designed to support dogs with digestive issues, especially diarrhea. It contains the probiotic strain Enterococcus faecium SF68, known to help maintain intestinal balance and promote gut health. While the CFU count is 8 billion per gram, which is decent for probiotics, the product focuses on a single well-studied strain rather than a variety of strains. The supplement comes as easy-to-feed chewable tablets with a liver flavor that most dogs find palatable, making administration simpler for pet owners.

FortiFlora also includes antioxidants to support the immune system, which is a nice bonus beyond digestive health. The tablets are allergen-free and suitable for dogs of all breeds and life stages. Storage is straightforward, with no special requirements mentioned, which adds convenience.

One of the product’s biggest strengths is the strong reputation of Purina and the fact that it is veterinarian-recommended, backed by many positive user reviews. This gives confidence in the product’s quality and effectiveness. However, some pet owners might prefer probiotics offering multiple strains to cover a broader range of gut bacteria. Since this product mainly supports diarrhea issues, those looking for general probiotic maintenance might want to explore other options with more diverse strains or higher CFU counts. FortiFlora is a reliable, vet-backed choice for managing digestive health and diarrhea in dogs, especially if you want a convenient chewable tablet from a trusted brand, though it may be less suitable if you seek a multi-strain probiotic or higher CFU counts for general gut health.

Native Pet Probiotics for Dogs is a powder supplement designed to improve your dog's digestive health and boost immunity. It contains a balanced blend of four probiotic strains, including Bacillus coagulans and Bifidobacterium species, which are known to support gut health. The product offers 6 billion CFUs per serving, a good amount to help manage common tummy issues like gas, diarrhea, and bloating. The powder form helps maintain potency better than some chewable options that can lose effectiveness during processing.

Added prebiotic fiber and digestive enzymes enhance nutrient absorption and overall gut balance. The inclusion of natural ingredients like organic pumpkin seed and beef bone broth also makes it tasty, helping even picky eaters enjoy it easily. The supplement is made in the USA, with a solid brand reputation and a one-year guarantee, which adds to its reliability. Serving size is adjustable by dog weight, making it suitable for all breeds and ages.

As a powder, it requires mixing into food daily, which might be less convenient for some compared to chews or capsules. While 6 billion CFUs is effective for many dogs, those needing very high potency might look for higher CFU counts. This product represents a well-rounded choice for dog owners seeking a vet-formulated, natural probiotic to support digestion, immunity, and skin health.