MSM is a bioavailable form of sulfur related to dimethylsulfoxide (DMSO). Sulfur is an element that is present in all living organisms and 85% of it is provided by MSM and its related compounds. MSM is involved with a variety of biological functions, including the maintenance of collagen integrity, and it nutritionally supports the formation of healthy connective tissue. In addition, research has shown MSM to enhance the mucosal membranes. Long term use or high doses of MSM encourage urinary excretion of molybdenum, so for that reason, we have added molybdenum to our MSM formula.