Glucosamine and Chondroitin help heal and rebuild damaged cartilage, while Hyaluronic Acid [HA] improves lubrication, supplies nutrients to damaged cartilage cells, acts as an antioxidant in the joint, and improves comfort and range of motion. Joint III Select contains 20 mg of Hyaluronic Acid in each easy-to-swallow caplet - that's 60 mg of HA per serving!