A naturally occurring odourless source of bio-available sulphur for horses to supplement diets where levels may be low. Sulphur has an essential role in general metabolism and protein synthesis. It plays an important role in maintaining health hair, skin, hooves and joints. Research shows that horses in work have increased tissue breakdown, therefore adequate daily dietary sulphur is essential for rebuilding tissue. The drying and processing of horse feeds considerably reduces or completely destroys MSM naturally present in the food source. Abbey Animal Health MSM provides an excellent source of sulphur in a readily available form.