iO Potassium Chloride is another electrolyte that is important to a horse?s overall health. iO Potassium Chloride acts as an electrolyte that horses need to supplement heavy training or heavy workloads. Horses involved in heavy training should have their feed supplemented with salt and minerals for horses to replenish neuromuscular nutrients lost in perspiration. Quick Facts & Benefits: Electrolytes are minerals that occur in your horse?s body in a charged form and are essential to the functioning of many physiological systems. Replenishes essential nutrients lost during sweat or intense exercise that help with post-event recovery including Sodium, Potassium, Chloride, Calcium and Magnesium. Made in Australia.