MSM is comprised of 34% bio-available sulfur, making it the richest source of organic sulfur available. Sulfur is critical in the formation of collagen and glucosamine - which are vital components for healthy bones, joints, ligaments and tendons. Guaranteed Analysis: Analysis per 29.6cc scoop(one ounce): MSM - 28.375 grams or 28,375 mg. Ingredients: Pure Methylsulfonylmethane. Directions:Give 1 ounce daily or 1/2 ounce twice daily as needed.