PureforMSM® is 99% patented pure! MSM is a naturally occurring sulfur compound, which plays an important role in maintaining the health of collagen, cartilage, hooves, hair and joint fluid. MSM is also known for its ability to help horses with stiffness and discomfort associated with exercise and normal daily activity.
Original patented MSM (R.J. Herschlers patent #4,616,039).
