Amazing Formulas Glucosamine, Chondroitin and MSM dietary supplement is shellfish-free! These three sulfur compounds are essential for rebuilding muscles and joint tissues including tissues like articular cartilage. Glucosamine Chondroitin and MSM supports joint health and may help to connective neutralize the effects of free radical damage. It may also help to produce collagen and keratin, which are essential for healthy hair, skin and nails.