10 Best Probiotics For Dogs 2026 in the United States

Purina Pro Plan Veterinary Supplements FortiFlora is a popular probiotic chewable for dogs, widely recommended by veterinarians especially for managing diarrhea and digestive health. It contains a specific probiotic strain scientifically shown to support intestinal balance and promote a healthy immune system with added antioxidants like vitamin C and zinc. The chewable tablets are easy to feed and come in a liver flavor that most dogs enjoy.

The formulation focuses mainly on a single effective probiotic strain combined with immune-supporting ingredients, making it suitable for dogs of all breeds and life stages needing digestive support. If your dog struggles with diarrhea or sensitive digestion, this supplement offers a trusted and convenient option, though those looking for broader strain diversity or higher CFU counts might want to explore other products.

Purina Pro Plan Veterinary Supplements FortiFlora is designed to support digestive health in dogs, especially those experiencing diarrhea. It contains a single probiotic strain, Enterococcus faecium SF68, which is well-studied and trusted by many veterinarians. The CFU count is 8 billion per gram, providing a strong dose to help promote a balanced gut.

The chewable tablet form makes it easy to give to dogs of all sizes and ages, with a tasty liver flavor that most dogs seem to enjoy. Besides probiotics, it also includes antioxidants to help support the immune system, which is a nice bonus. One thing to note is that it focuses on one specific probiotic strain rather than a mix, so if you're looking for a probiotic with multiple strains for broader digestive support, this might be somewhat limited.

The product is allergen-free and stable, so following the package instructions is important to maintain effectiveness. Backed by a reputable brand, FortiFlora is a solid choice for dog owners looking for veterinary-recommended probiotic support, particularly for managing diarrhea or general gut health.

The Purina Pro Plan Veterinary Supplements FortiFlora Dog Probiotic Supplement is a popular choice among veterinarians for managing digestive issues in dogs. With a probiotic strain of Enterococcus Faecium, it has a CFU count of 8 CFU/g, which supports intestinal health and balance. This product is suitable for all life stages and breeds, making it a versatile option for dog owners.

The supplement is in powder form, flavored with liver, which is often well-received by dogs, making it easy to administer. It also includes additional ingredients like vitamins C and E, zinc, and beta-carotene, which contribute to health and immune support.

However, the lack of multiple probiotic strains may limit its effectiveness for some dogs needing a broader spectrum of gut flora support. Additionally, the packaging is convenient but might result in more waste compared to bulk options. It's a solid choice for dog owners looking for a probiotic supplement, especially those dealing with digestive health issues.