With Hydrolyzed Collagen, Glucosamine Sulfate and MSM Collagen Joint Support Powder is a combination of ingredients that help to support the formation and function of healthy joint tissue.* This product uses hydrolyzed collagen that has been enzymatically treated for ease of absorption, as well as MSM (methylsulfonylmethane), a biologically active form of sulfur, that serve as building blocks for collagen synthesis.* Glucosamine is included as an essential structural component that is naturally present in bones and joints.* Numerous clinical studies have demonstrated that glucosamine can help to support healthy joint structures and promote joint comfort.* Natural color variation may occur in this product. This product is sold by weight not volume.