MSM (Methylsulfonylmethane) is a natural form of bioavailable sulfur found in all living organisms. Sulfur is critical for the formation of collagen, keratin, and elastin, which are proteins that make up most of the body’s structural tissues, including hair, skin, nails, bone, cartilage, and ligaments.* Sulfur is also necessary for glutathione, lipoic acid, and SAMe production.* Clinical studies demonstrate that MSM may help to maintain healthy joint tissues.*