MSM , or methylsulfonylmethane, is a naturally occurring organic form of dietary sulfur needed by our bodies (in and around cells) every day to maintain the structure of proteins, protect cells and cell membranes, replenish the connections between cells and preserve the molecular framework of connective tissue. In addition, MSM supports circulation, scavenges free radicals and supports proper intestinal function. Take 2 tablets with a meal three times daily to supply your body with the recommended 4.5 g per day. For best results, add Vitamin C/Citrus Bioflavonoids or Timed-Release Vitamin C to your MSM regimen.