SportDogFood Gut-Check Maximum Probiotic for Pets, 1 lb, 8 strains of Specialized Naturally Occurring Digestive Bacteria Minimum of 6.8 Billion Colony Forming Units per gram. Enzymes, Probiotics and Pre-biotics to help support healthy immune system Built to support the dog's body during hard work & stress. Organic Whey base can be used in dry food, wet food.