Sulfur is a common substance in the human body. Sulfur MSM and its related compounds D.M.S.O. and D.M.S. (dimethyl-sulfide) provide 85 percent of the sulfur found in all living organisms.[4]

Sulfur occurs in the book and in other organs. Research shows that MSM can be found in human blood and in other organs and has been detected in normal human urine.[5] The level of M.S.M. in the circulatory system of an adult human male is about 0.2 parts per million.[6]

MSM helps form the essential amino acids methionine and cysteine. Methionine and cysteine are important to the overall health of humans.[7]