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 the LingnusilTM brand MSM (methylsulphonyl-methane), an organic form of sulfur found in all living organisms. Studies have shown that these nutrients provide dietary components that support healthy joint structure and function