MSM (methylsulfonylmethane) a metabolite of DMSO (dimethylsulfoxide) is a naturally occurring component of every living cell. MSM is a bioavailable form of sulfur which is necessary for the proper function of the body's skin hair nails connective tissue amino acid production immune system and healthy joints. Sulfur is considered a macronutrient and must be consumed each day for healthy function and growth of the body.Other products from HerbsPro