Hoof Secret by Cox Vet Labs is an alfalfa-based pellet that combines the key ingredients Biotin, Zinc and Methionine to support optimal hoof growth. Biotin promotes healthy hoof growth, Zinc strengthens the soft tissue of the inner hoof to the outside hoof wall and Methionine is required for hoof growth. Feeding Hoof Secret helps improve hoof hardness and thickness while promoting new hoof growth. Each ounce of Hoof Secret provides 35 mg. Biotin, 2286 mg. Methionine, 138 mg. Zinc, 43 mg. Manganese, 10 mg. Vitamin B6 and 328 mg. Ascorbic Acid.