Jarrow Formulas® MSM is an organic source of highly absorbable sulfur. This mineral plays a key role in maintaining the structural integrity of key body tissues like cartilage. MSM-sourced sulfur is used to produce glycosaminoglycans, like chondroitin sulfate, dermatan sulfate and hyaluronic acid.* These sulfur-rich glycosaminoglycans are key components of connective tissues like joint cartilage, skin and collagen.*