MSM (Methylsulfonylmethane) Methylsulfonylmethane is the oxidized form of dimethyl sulfoxide (DMSO), an organic sulfur compound (aka organosulfur compound) formed from lignan. This organic sulfur-containing compound naturally occurs in some green vegetables and other food products, plus it’s found in the human body, in many animals, and in milk. It’s also a natural substance made from phytoplankton in the oceans.

A well-researched MSM benefit is that it helps decrease joint inflammation, improves flexibility and restores collagen production. It can help form connective tissue and repair joints, tendons and ligaments.