NOW Probiotic-10 offers a balanced spectrum of live organisms consisting of acid-resistant probiotic bacterial strains that are known to naturally colonize the human GI tract. Probiotic bacteria are critical for healthy digestion, help maintain the integrity of the intestinal lining, support proper intestinal motility and participate in the detoxification process. This potent Probiotic-10 formula delivers 100 billion live organisms to help restore healthy flora following occasional but temporary disruptions to intestinal balance.