MSM is an essential form of sulphur found in most plants and an important equine joint supplement. Naturally occurring in the pasture, it is a natural equine supplement. In horses, MSM supports the maintenance of strong joints in all horses, young and old, retired and competing. It is suitable for all horses and ponies. Absolutely Pure MSM for horses, MSM is an essential form of Sulphur found in most plants and an important equine joint supplement. Naturally occurring in the pasture, itandrsquo;s a natural equine supplement. In horses, MSM supports the maintenance of strong joints in all horses, young and old, retired and competing. MSM is suitable for all horses and ponies...