Kaufmann's Vitamin E & Selenium Pellets is blended into an easy-to-feed pellet for equine use. Feeding Kauffman's Vitamin E & Selenium can provide a balanced defense against the deficiency of these two important nutrients. Product Details: When fed at the recommended rate of one ounce per head, per day, this supplement will provide 1,250 mg of Vitamin E and 2 mg of Selenium (Se) per day. Always follow label directions and do not overfeed this supplement or feed any other supplement containing Selenium (Se) while using this product. Feeding Directions: For horses, feed at the rate of one ounce per head, per day. Enclosed measuring cup holds approximately one ounce when level full. Approximately 64 day supply for one horse