Methyl-Sulfonyl-Methane. Clinical grade. Methyl-Sulfonyl-Methane (MSM) is an organic source of sulfur that has long been associated as the metabolite of DMSO. It is utilized in connective tissue formation, the production of the antioxidant gluthione and in the detoxification process. Sulfur is structurally and functionally important in more than 150 compounds in the body including enzymes, hormones, antibodies and free radical scavengers. The MRM Advantage: Supports immune health. Promotes optimal joint health. Powerful antioxidant properties. Organic source of Sulfur. (This statement has not been evaluated by the Food and Drug Administration (FDA). This product is not intended to diagnose, treat, cure or prevent any disease.) Contains No Common Allergens.