"Viridian Nutrition MSM Glucosamine Complex is a vegan glucosamine sulphate and methyl sulphonyl methane (MSM) complex using the highly accredited vegan glucosamine sulphate 2KCL. Glucosamine sulfate is a chemical found in the human body. It is used by the body to produce a variety of other chemicals that are involved in building tendons, ligaments, cartilage, and the thick fluid that surrounds joints."