10 Best Probiotics For Dogs 2025 in the United States

Zesty Paws Dog Allergy Relief chews are designed to help dogs suffering from itchy skin and allergies, combining probiotics with other natural ingredients for a multi-angle approach. The product includes five different probiotic strains, such as Lactobacillus acidophilus, which helps maintain a healthy gut flora and supports digestion. With 250 million CFUs per serving, it offers a moderate amount of beneficial bacteria, which should be enough for daily use in most dogs.

Besides probiotics, it contains Colostrum and Astragalus Root, known for their immune-boosting and anti-inflammatory effects, which can provide relief from itching and support normal histamine levels. The addition of Omega-3 fatty acids from EPA and DHA further supports skin health and reduces irritation. The chews come in a tasty lamb flavor and are easy to give. However, the CFU count is on the lower side compared to some other probiotic products, so it might not be ideal for dogs needing very high doses.

This product is well suited for dog owners looking for a combined allergy and digestive support supplement in convenient chew form, especially for mild to moderate skin itchiness and immune support.

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.

Zesty Paws Vet Strength Probiotics for Dogs offers a thoughtful blend of ingredients aimed at improving your dog's digestion and immune health. It contains the DE111 Bacillus subtilis strain, which is clinically studied and known to support gut function and immunity—this gives confidence that the probiotic effect is backed by science. The addition of digestive enzymes like Amylase, Protease, and Bromelain helps break down food better, which can be great for dogs with sensitive stomachs. The formula also includes fiber and natural ingredients like ginger to support bowel health and digestive motility.

While it provides a focused strain rather than a complex mix, this can be beneficial if you prefer a targeted approach. The chews are designed to be tasty, making it easier to give supplements regularly without a struggle. They come in a convenient 90-count pack suitable for all dog breeds.

This product is a good choice for dog owners looking to support their pet's digestive health with a vet-formulated and palatable option. However, if you want a probiotic with multiple strains or detailed potency information, you might want to compare with other products.