OstroVit MSM is a dietary supplement in the form of tablets containing methylsulfonylmethane - an organic chemical compound of sulfur (organic sulfur). Methylsulfonylmethane occurs, among others, in green vegetables or in fresh milk, however, it is a substance that easily degrades during the technological processes of food processing. This ingredient plays an important role in the synthesis of amino acids and collagen. One daily serving of the supplement provides 2000 mg of methylsulfonylmethane.