Electrolytes are responsible for the correct function of nerves and muscles and are found in small amounts in the fluid surrounding cells; the main electrolytes are calcium, phosphorus, magnesium, sodium and potassium. During exercise horses lose water and electrolytes are dissolved in this water and are therefore lost through the process of sweating. It is important to ensure that horses are given electrolyte supplements before and after hard competition to ensure their nerve and muscle function is at its optimum. Online for Equine stock a range of electrolyte supplements to aid your horse through competition and to help him recover quickly after exercise. Electrolyte supplements should only be fed when water is available to the horse.