Support correct hoof growth and health with the Iron Horse Hoof-N-Sole Powder Horse Supplement. This supplement features a highly concentrated combination of biotin and essential amino acids to support hoof and sole growth and the maintenance of healthy hooves. Since it’s so concentrated, you only need to feed a small amount, so a little goes a long way. It’s very tasty, and its small dosage makes it perfect for picky eaters, too.