Now Vegetarian Glucosamine & MSM 120 vcaps is a dietary supplement that provides nutrients that contribute to joint health and cartilage formation. The main components of cartilage tissue, proteoglycans and glycoaminoglycans, are built from glucosamine and other substrates. Those components retain water to create dense cushions of fluid inside joints for lubrication and shock absorption. This supplement also contains MSM, a natural source of sulfur that is used in the synthesis of proteoglycans. This synergistic supplement contains no animal products or by-products, so it is suitable for vegetarians.