MSM (Methylsulfonylmethane) is a metabolite of DMSO (dimethyl sulfoxide) found in nature. Found extensively in nature, DMSO has been used as a carrier for various compounds. The strong odor, along with the resultant foul breath and skin irritations that result from exposure to DMSO are major drawbacks in using it. MSM, a stable metabolite of DMSO, is virtually tasteless and odorless. The key portion of MSM is the sulfur component. Sulfur is necessary for the proper formation of proteins. One of the essential components in all life forms, sulfur is involved in amino acid production, connective tissue, hair, hide and hooves, enzymes, hormones, and immunoglobulins.