Poly's Glucosamine + Chondroitin Sulfate + MSM Capsule, This super compond designed with nutrients specific to bone and joint health, at a very cost effective price. Our product contains pure MSM (Methylsulfonylmethane), a white crystalline substance. MSM is a dietary source of bioavailable organic source of sulfur. Sulfur found in foods is a structural mineral that helps to main the strength of tissues by forming sulfur (bonds). We offer only "quality ingredients" in our products with purity, potency and cost effective prices.