Live Cultures Probiotic Fiber For Dogs of all Sizes Supports Digestive & Immune Functions Beneficial Pre and Probiotics in an Easy-to-Feed Bite-Sized Chew No Wheat No Corn No Artificial Ingredients** Quality Seal - NASC Why It Works Daily Probiotics the right combination of prebiotics and probiotics to help support proper digestion and maintain gut flora and support immune system functions. Formulated with Ganeden BC30, a unique shelf-stable probiotic that doesn't require refrigeration-all delivered in a tasty duck-flavored chew.