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Methylsulfonylmethane (MSM) is an organic sulfur-containing compound that occurs naturally in fruits, vegetables, grains, animals, and even humans.MSM has earned a lot of attention for its use as a nutritional supplement.This is due to MSMâs reputation as a potent antioxidant booster that is believed to resist oxidative damage and swelling, especially after exercise and strenuous activities.SM has earned a lot of attention for its use as a nutritional supplement. This is due to MSMâs reputation as a potent antioxidant booster that is believed to resist oxidative damage and swelling, especially after exercise and strenuous activities.
Toxicity of methylsulfonylmethane in rats. Food Chem Toxicol. 2002. MSM is a popular dietary supplement used in a variety of conditions including pain, inflammation, allergies, arthritis, parasitic infections and the maintenance of normal keratin levels in hair, skin and nails.Despite its popularity, there is little published toxicology data.ood Chem Toxicol. 2002. MSM is a popular dietary supplement used in a variety of conditions including pain, inflammation, allergies, arthritis, parasitic infections and the maintenance of normal keratin levels in hair, skin and nails. Despite its popularity, there is little published toxicology data.