Supports Joint HealthGlucosamine + Chondroitin Combination provides clinically studied quantities of Glucosamine Sulfate and Chondroitin Sulfate, combined with Vitamin C and Manganese for optimizing joint health.Glucosamine Sulfate is an essential component of joint and intestinal tissue and can be utilized to produce synovial fluid, which lubricates the joints. Sulfur is also utilized in the production of cartilage tissue.Chrondroitin Sulfate stimulates the synthesis of hyaluronic acid (a component of synovial fluid) which is the lubricant for joints as well as a major component of connective tissue in the skin.Vitamin C and Manganese are required for the synthesis ofcollagen and cartilage.For best results, use with Jarrow FORMULAS BioSil, the Biologically Active Silicon to further support joint and connective tissue.