Calxequin® contains key ingredients such as biotin to support hoof growth, essential amino acids methionine and lysine to support hoof integrity, and copper and zinc to support hoof strength and durability, all in one scoop. Vitamin E and selenium provide antioxidant properties that support hoof health. Nutramax Laboratories Veterinary Sciences supplements are veterinarian formulated with high-quality ingredients to support your horse's joint health, no matter their discipline or performance level. From the makers of Cosequin.