MSM is a naturally occurring compound which contains sulfur and methyl (CH3) groups.
MSM is involved in a variety of biological functions, including the maintenance of collagen integrity, and it nutritionally supports the formation of healthy connective tissue, particularly that of the joints. MSM also helps support healthy hair, skin and nails. OptiMSM® is the highest quality, purest and most widely used form of MSM in the dietary supplement industry.*