Joint Health Supports Normal Joint Function* NOW Glucosamine, Chondroitin & MSM combines three of the most popular and effective nutrients for supporting joint health in one dietary supplement. Our Glucosamine and Chondroitin are both 100% sulfate, the most studied form of these nutrients. In addition, we also include MSM (Methylsulphonylmethane), an organic form of sulfur found in all living organisms