NOW Gr8-Dophilus is a combination of 8 different species of friendly bacteria formulated to support gastrointestinal health and immune system function.* FOS is also included in this product to assist healthy growth of Acidophilus and Bifidus organisms.* The probiotic strains in this product have been identity-verified using DNA-fingerprinting technology. Take 1 capsule 1 to 3 times daily between meals or on an empty stomach. Each capsule contains 11 billion live organisms at time of manufacture. Store in a cool, dry, dark place. Refrigeration is recommended after opening to provide a potency of 4 billion live organisms through the Best By date.