Methylsulfonylmethane (MSM), also known as Sulfonyl sulfur is found in the fluid and tissues of all living organisms and in a variety of raw plant and animal foods. It is no longer present in foods that have been stored during shipping or held in storage, even though they contained MSM in their natural state. It bonds with moisture, and when any dehydration occurs, the MSM goes with it.

Like Glucosamine and Chondroitin, MSM (Methylsulfonylmethane), may provide raw materials the body needs. MSM is a pure, organic, non-toxic, non-metallic element that occurs widely in nature. It's a metabolite of the compound dimethysulfoxide, and by weight is 34% elemental sulfur, making it one of the richest sources of sulfur. As the eighth most abundant element in all living organisms, sulfur is found in more than 150 types of bodily compounds, from enzymes and tissues to hormones and antioxidants. It's also a component of structural protein, the type found in hair, skin, and joints. Sulfur also occurs in connective tissue, in a key structural component called collagen.