(Methylsulfonylmethane) - is a naturally occurring sulfur compound found within our bodies. It is a safe and natural, assimilate able food derived from the ocean. MSM is neither a medicine, drug, chemical, herb, stimulant, synthetic food or additive. It is a member of the sulfur family but should never be confused with sulfa drugs, to which some people are allergic. It is completely safe, odorless, and non-toxic. MSM is a natural organic compound. It occurs naturally in the foods we eat but disappears when we process our food.