10 Best Dog Probiotics 2025 in the United States

Purina Pro Plan Veterinary Supplements FortiFlora Chewable Dog Probiotic Supplement Tablets are a convenient and effective option for managing your dog's digestive health. One of its key strengths is the inclusion of the probiotic strain Enterococcus faecium SF68 at a significant CFU count of 1x10^8, which has been proven to promote intestinal balance and health.

The easy-to-feed chewable tablet form makes administration simple, and it's suitable for dogs of all breeds and life stages, including puppies. Additionally, it contains antioxidants which contribute to a strong immune system, making it a well-rounded supplement for general health maintenance and digestive support, especially in cases of diarrhea.

It’s important to note that the product is recommended to be used under veterinary supervision, which may restrict occasional or casual use without professional guidance. If you are looking for a reliable probiotic supplement for your dog, FortiFlora offers a reputable and vet-recommended option.

Zesty Paws Dog Allergy Relief chews combine probiotics with allergy-fighting ingredients to support dogs dealing with itchy skin and ears. The product includes five probiotic strains (such as Lactobacillus acidophilus) with a total of 250 million CFUs, which is a moderate amount to help maintain gut health and support digestion. Along with probiotics, it features natural components like Colostrum and Astragalus Root that aim to reduce itchiness by supporting normal histamine levels. The addition of Omega-3 fatty acids adds benefits for skin health and immune support.

These soft chews come in a lamb flavor, making it easier to give to dogs of various sizes, and the dosage can be adjusted accordingly. One advantage is the inclusion of EpiCor, a yeast fermentate, known to boost the immune system. However, compared to some specialized dog probiotics, the CFU count is on the lower side, which might be less impactful for severe gut issues. It is recommended to keep the product in a cool, dry place.

This product suits pet owners looking for a combined probiotic and allergy relief supplement in chew form, especially for dogs experiencing mild to moderate skin discomfort.

The Purina Pro Plan Veterinary Supplements FortiFlora Dog Probiotic Supplement is a highly recommended product by veterinarians for managing diarrhea in both puppies and adult dogs. It contains Enterococcus Faecium, a probiotic strain proven to improve intestinal health and balance, which is highly beneficial for digestive health. The CFU count is at 8 CFU/g, which is effective but might be on the lower side compared to some other high-potency probiotics in the market. This probiotic supplement also promotes a strong immune system and includes antioxidants, providing additional health benefits.

The formulation is in powder form, making it easy to mix with your dog's food, and it comes in a liver flavor, which dogs generally find palatable. However, it’s worth noting that the strain diversity is limited to a single strain, which might not cover the full range of potential digestive issues. The product includes additional beneficial ingredients like Vitamin C and E, zinc, and manganese, which contribute to overall health.

The storage and shelf life are convenient, as it doesn’t require refrigeration and comes in a 30-count box, suitable for a month’s supply. Some users might find the cost slightly high, but it comes with a quality guarantee from Purina. This product is ideal for dog owners seeking a reliable probiotic to manage digestive health issues and support their dog's overall immune system.