The evolution of hoof supplements has begun! Hoof Evolution combines one of the highest concentrations of biotin per serving (118.75mg/oz.) and specialized ingredients that have been cased studied for vasodilatation properties. Biotin isn’t the only nutrient we use for hoof growth we also include high levels of DL-Methionine, Zinc, Copper, Manganese, and Lysine. It provides high levels of nutrients, helps promote blood flow and circulation to the hoof.