Targeted Release. Supports Digestive and Intestinal Health. 2 Billion Active Cultures / 6 Probiotic Strains. BIO-TRACT® Technology. Suitable for Vegetarians. Nature’s Bounty Optimal Solutions Controlled Delivery Probiotic takes advantage of today’s nutritional scientific innovation with a targeted approach to digestive health. We’ve combined our exceptional probiotics with Bio-tract technology. Nature’s Bounty Optimal Solutions Controlled Release Probiotics. Probiotic Organisms include: (L.plantarum L. acidophilus L. fermentum L. rhamnosus B. bifidum B. longum). Bio-tract technology is the process of enrobing our probiotics with a vegetarian gel-like substance that protects the ingredients from gastric acids. Bio-tract technology allows the caplet to pass through the digestive tract and release live organism at targeted locations within the digestive system. Nature’s Bounty Optimal Solutions Controlled Probiotic is processed in a facility that uses a patented manufacturing process called LiveBack. The LiveBac process of production is designed to deliver high-viability probiotic ingredients and eliminates the need for refrigeration prior to opening. You can feel secure knowing Nature’s Bounty Optimal Solutions Controlled Delivery Probiotic maintains product integrity.