Source Naturals Glucosamine Chondroitin provides important building blocks for helthy joints and connective tissues. Glucosamine, an amino sugar, is an essential structural component of glucosaminoglycans, large linear mollecules that Enhance to lubricate joints , nourish cartilage and connective tissue, and assist in wound healing. Manganese is involved in the synthesis of collagen, and chondroitin sulfate lends additional structural support via its high degree of interaction with collagen fibers. Molybdenum aids in complete metabolism of glucosamine and chondroitin.