TopSpec's Electrolytes is designed to help compensate for electrolyte loss after heavy sweating. This new additive has a high salt formula which contains wild berry to aid palatability. It is recommended by equine veterinary practices and independent nutritionists. Feeding Guidelines Divide the recommend daily amount equally amongst meals and mix well. It is recommended that this electrolyte preparation is used for at least two days after sweating. What's in it Sodium Chloride, Glucose, Potassium Chloride, Magnesium Sulphate, Calcium Carbonate. Size Guide Available in a 1.5 Kilogram tub, 3 Kilogram tub, 9 Kilogram tub, or 20 Kilogram tub.