A pharmaceutical grade, bioavailable source of the elemental mineral sulfur. Methy Sulfonyl Methane (M-S-M) is a natural form of organic sulfur found in all living organisms. Sulfur is important in the body's production of connective tissue, such as cartilage, tendons and mucous membranes. It is a component of mucopolysaccharides, such as glucosamine sulfate. Incredibly non-toxic and highly bioavailable, Futurebiotics is proud to be one of the few companies to offer biological sulfur. Contains no: yeast, salt, sugar, soy, glutens, dairy products, starch, animal products, artificial preservatives or coloring.