NOW Joint Support Powder is a superior combination of dietary supplements that have been shown to nutritionally support healthy joint function. Hydrolyzed Beef Gelatin is 86% protein, high in collagen and has been enzymatically predigested to enhance absorption. Glucosamine is an amino sugar derived from the chitin of shellfish. It is utilized by the body to support healthy joint structures.* Sulfate is the preferred form of Glucosamine and is a natural source of potassium and sulfur. MSM (Methylsulphonylmethane) is a biologically active form of organic sulfur found in all living organisms. It is naturally found in varying amounts in raw unprocessed milk, meat, fish, fruits and vegetables.