MSM Sulfur Our body"s ability to make the powerful antioxidant enzyme called glutathione peroxidase, which is dependent on ample dietary sulfur. Carlson MSM (methylsulfonylmethane) offers a dietary source of sulfur to supplement, maintain, and support our body"s health. Each capsule contains 800 mg of MSM providing 270 mg of sulfur. Supplement Facts Serving Size 1 Capsule Amount Per 1 Capsule % DV MSM (methylsulfonylmethane) 800 mg * Sulfur 270 mg * * Daily Value (DV) not established