Dietary Supplement. Supports healthy joints & skin. Methylsulfonylmethane (MSM) is naturally occurring organic sulfur compound found in all living plant and animal tissue. Sulfur, an essential element in human nutrition, is necessary component for making collagen, the primary constituent of skin hair, joints, cartilage and other connective tissues. It helps support joint flexibility, cellular fluid balance and healthy skin. Our formula is made from the finest quality optimism brand MSM. 1000 mg of MSM provides 340 mg of elemental sulfur. This product is made using a special manufacturing process resulting in a firmly compressed powder block within the capsule, rather than a loose powder. This provides a fully potent 1000 mg MSM formula in an easy-to-swallow vegetarian capsule. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease). Potency and purity guaranteed.