10 Best Probiotics For Dogs 2026 in the United States

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.

Zesty Paws Probiotics for Dogs is a soft chew supplement designed to support digestion, gut health, and the immune system in dogs of all breeds and ages. It includes a blend of seven probiotic strains, notably the clinically studied DE111 (Bacillus subtilis), which helps maintain healthy gut flora. The formula also contains 4mg of PreforPro, a prebiotic that encourages the growth of beneficial bacteria.

Added digestive enzymes help break down fats, proteins, and carbohydrates, which can aid dogs with tummy troubles. Pumpkin and bromelain are included to support regular bowel movements and overall digestive comfort. The chicken flavor makes it appealing for most dogs to eat, and the product’s soft chew form makes it easy to administer. It has favorable customer reviews reflecting satisfaction.

This probiotic is a strong choice for dog owners looking for a combined probiotic, prebiotic, and enzyme supplement to help with digestion and stool regularity, especially for dogs prone to digestive upsets.

Zesty Paws Solid Poop Support Bites are designed to help dogs with digestive upset and diarrhea by firming up stool and supporting gut health. These soft chews combine probiotics like Bacillus subtilis (DE111) and Bacillus coagulans with prebiotics such as Fructooligosaccharides (FOS), which work together to promote a healthy balance of gut bacteria and improve digestion. The addition of pumpkin seed and a unique fiber called M-FIBER (derived from ground Miscanthus grass) helps bulk the stool and regulate bowel movements naturally.

The product also includes enzymes like cellulase and papain to aid digestion further. While the probiotic strains are mainly limited to two Bacillus types, these are clinically studied and stable, benefiting shelf life and potency. The soft chew format is convenient and palatable for most dogs, though measuring exact doses might require attention. Packaging is compact and likely supports freshness.

This supplement is suitable for dog owners looking for a gentle, natural way to manage diarrhea and improve bowel health. Those seeking a wider variety of probiotic strains or higher CFU counts might want to explore other options.