Apple-dex is an apple-flavored, sodium-based electrolyte supplement your horses will love. It helps replace electrolytes lost during strenuous activity, including training or competition and is micro-blended for use in feed or drinking water. FEEDING DIRECTIONS (enclosed scoop holds 1 ounce):APPLE DEX may be administered in the horse's feed or drinking water at the rate of 2 ounces per 10 gallons of fresh water, or 2 ounces in the horse's daily feed ration in place of regular salt. Important: When administered in water allow no other source of drinking water. | Farnam Apple-Dex Equine Supplement | Size 5 lb