Contains 90.7 mg. selenium and 20,000 I.U. vitamin E per pound. Widely used to prevent tying-up and azoturia in horses. Also used to nutritionally treat infertility, muscular weakness in foals, and increase performance. Directions: The normal recommended dosage is 1/2 to 1 1/2 teaspoons per 10 pounds daily feed intake. 250 lb - 1/4 to 3/4 teaspoon. 500 lb - 1/2 to 1 1/2 teaspoon. 750 lb - 3/4 to 2 1/4 teaspoon. 1000 lb - 1 - 3 teaspoons. This jar contains 453.6 gm. One teaspoon equals 5 gm. Ingredients: Calcium carbonate, rice hulls, Vitamin E (as DL-alpha tocopheryl acetate), diatomaceous earth, sodium bentonite, and sodium selenite. Guaranteed Analysis: Selenium...............90.7mg Vitamin E............20,000 IU