Dietary SupplementDr. Mercola Has Been Providing Quality Products Since 2001 As important as sulfur is for health, many people don’t get enough. MSM is an organic form of sulfur and a potent antioxidant that contains 34% sulfur. Our MSM Sulfur Complex provides MSM and other valuable ingredients to help you get the sulfur you need: OptiMSM® (Methylsulfonylmethane) – Our manufacturer’s four-stage rigorous distillation process ensures a 99.9% pure and consistent MSM in OptiMSM® This optimal MSM supports joint, cartilage and connective tissue and helps reduce the effects of cellular aging to help you maintain your active lifestyle.Trimethylglycine (TMG) – Also known as betaine, it’s an active component of choline and plays an important role along with folate in methylation. TMG can also act as a molecule to help control the balance of water in your cells and support your cardiovascular health by donating a methyl group to reduce homocysteine into L-methionine.R-Alpha Lipoic Acid (from Sodium R-Alpha Lipoate) – Due to its capability to increase glutathione levels and to be readily absorbed when taken orally, we included alpha lipoic acid (ALA) in this formula. R-Alpha Lipoic Acid (R-ALA) is the preferred form of lipoic acid, which is superior in stabilization and can provide up to 21 times greater bioavailability.Organic Sulfur Vegetable Blend - Naturally-occurring organo-sulfur compounds can be found in certain vegetables. One such group of nutrients called isothiocyanates are derived from sulfur-containing compounds found in cruciferous vegetables like broccoli, kale, and green cabbage. Allicin, another organo-sulfur compound, is the beneficial phytochemical found in garlic.