HELPS SUPPORT A HEALTHY DIGESTIVE SYSTEM. Water Soluble Powder for Dogs. Advanced formula with over 4 billion CFRs of probiotics per packet with help maintain proper gut flora and pH to help support proper digestive and bowel health. Added prebiotics to support the growth of beneficial bacteria. Helps maintain intestinal balance when transitioning to new food. Contains direct-fed microbial cultures to supply beneficial microorganisms that occur naturally in the hind gut of healthy animals. Flavorless & easy to digest - all-natural source of probiotics.