Apple-a-day electrolytes are formulated to replenish lost minerals as well as prevent dehydration. Water intake and the appetite of your horse will also increase. Feed one ounce daily. Size is 5 Pound. Dimensions are 6.25 X 6.25 X 5.75 Salt Potassium Chloride Sodium Bicarbonate Calcium Carbonate Magnesium Sulfate Calcium Lactate Zinc Sulfate Manganese Sulfate Ferrous Sulfate Copper Sulfate Cobalt Sulfate. UPC Code = 715401020051