BMZ is a Biotin Methionine and Zinc (organic) Supplement. A quality hoof care top dress formulated specifically to increase hoof growth and integrity. Methionine is interchangeable with cysteine, a major amino acid of keratin, which is the main protein in connective tissue, such as hoof wall. Research has demonstrated that hoof integrity is directly related to zinc content in the hoof wall. When you only need 30 g per day, its a cost effective way to assist in hoof redevelopment.