Natures Bounty Probiotic Controlled Delivery 30 CapletsControlled Delivery system via Bio Tract technology puts the Probiotics where they do the most good in your intestines, not in the harsh gastric acids of the stomach where the helpful microorganisms can be destroyed. * Once Daily Formula. Provides 2 billion active cultures from 6 different probiotic organisms through time of expiration. Probiotics provide the health benefits that help the body support digestive health, intestinal function and immune