Solgar® Advanced 40+ Acidophilus Vegetable Capsules are a source of beneficial microorganisms L. acidophilus, L. rhamnosus, L. paracasei, B. lactis and S. thermophilus.* This product is formulated with the well-known strains LA-5®, LGG®, L. casei 431®, BB-12® and TH-4®, helping to maintain a healthy intestinal flora.*