HoofXtra mix is a nutritional mineral supplement with copper and zinc, magnesium, selenium, the B vitamins biotin, pyridoxine and folic acid and a small amount of calcium and phosphorus to help maintain optimal hoof, coat, hair and immune system health. Formulated to provide the most commonly deficient minerals – copper and zinc based on thousands of pasture and hay laboratory tests. HoofXtra is a highly bioavailable mineral mix containing proven premium mineral and vitamin sources based on equine research.