Nature's Bounty Optimal Solutions Controlled 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 transit high-viability probiotic ingredients and eliminates the need for refrigeration prior to opening. You can feel secure knowing Nature's Bounty Optimal Solutions Controlled Probiotic maintains product integrity.Guaranteed Quality - Laboratory Tested: Laboratory tested to meet strict quality control standards for potency, purity and disintegration. 100% Quality Guaranteed.