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.* Probiotic-10 utilizes bacterial strains that have been clinically validated for their support of healthy immune system function.* This product is formulated to deliver a potency of 50 Billion CFU through the Best By date. The probiotic strains in this product have been identity-verified using DNA-fingerprinting technology.