10 Best Probiotic For Dogs 2025 in the United States

The Purina Pro Plan Veterinary Supplements FortiFlora Dog Probiotic Supplement stands out as a top choice for managing digestive health in dogs, recommended by veterinarians. The supplement contains Enterococcus Faecium, offering a CFU count of 8 CFU/g, which is beneficial for promoting intestinal health and balance. The presence of additional ingredients such as Vitamin C, Vitamin E, and antioxidants helps support a strong immune system in dogs, making it a well-rounded nutritional addition to their diet.

The liver-flavored powder form ensures easy administration, as it can be easily mixed with food, making it convenient for pet owners to use daily. The product is suitable for dogs of all sizes and life stages, which adds versatility in its application. However, one should note that the CFU count, though beneficial, is on the lower end compared to some other probiotics on the market which might offer higher counts for more substantial gut health benefits.

The product needs to be stored in a cool, dry place to maintain its efficacy. While the brand Purina has a strong reputation for quality, some users might find the exact nutritional contributions of the strain not as clearly defined as in other supplements. This product remains a reliable option for improving your dog’s digestive health.

Zesty Paws Vet Strength Probiotics for Dogs is a soft chew supplement designed to support your dog's digestive health and immune system. It contains a mix of beneficial probiotics, including the clinically studied DE111 Bacillus subtilis, which helps maintain healthy gut function and immunity. The product also includes enzymes like Amylase and Protease, plus natural ingredients such as Gingever and VitaFiber, which aid digestion and gut motility. These additional elements set it apart from basic probiotics by offering broader digestive support.

Offered in an easy-to-give chew form with a flavor dogs enjoy, it’s convenient for daily use. Zesty Paws has a strong reputation in pet supplements. The probiotic works well for dog owners wanting a vet-formulated, comprehensive digestive aid suitable for all breeds.

If you prefer a supplement with a very high CFU count or detailed strain variety listed, you might want to compare with other options. However, for everyday gut support with immune benefits and a dog-friendly format, this product is a solid choice.

Zesty Paws Probiotics for Dogs come as tasty, chicken-flavored soft chews that many dogs find appealing, making it easier to give supplements regularly. The product includes a 7-strain proprietary probiotic blend along with a clinically studied strain called DE111 (Bacillus subtilis), which supports healthy gut bacteria and digestion. This supplement is enhanced with prebiotics (including PreforPro) and digestive enzymes, helping your dog better break down fats, proteins, and carbs, which can be especially helpful for dogs with sensitive stomachs or irregular bowel movements.

Added natural ingredients like pumpkin and bromelain support digestion and stool regularity. The soft chew form is convenient and easy to dose based on dog size, and it’s suitable for all breeds. Zesty Paws is a well-known brand with a strong customer rating of 4.5 out of 5 stars from over 95,000 reviews, reflecting high user satisfaction.

If your dog struggles with digestion or bowel issues, this supplement offers a balanced mix of probiotics, prebiotics, and enzymes in a palatable form that’s easy to administer.