Natrol Glucosamine, MSM, and CetylPure supports healthy joints, cartilage, and the natural lubricating fluid in joints for optimum joint health. Glucosamine helps to regenerate cartilage for more thorough joint comfort while MSM helps promote joint function. CetylPure contains cetyl myristoleate, which helps nourish and maintain the natural lubricating fluid in joints and promotes mobile joint function. Perfect for athletes or for people whose joints need a little extra love! Natrol makes this product in the U.S.A.!