Elevated levels of biotin, essential amino acids, and zinc is required by horses for the maintenance of good hoof structure and normal coat heath. Bio-Hoof also includes vitamins and antioxidants to provide additional nutrition and help reduce free radical damage. This product is safe for all classes of horses. Biotin, a supplement often recommended by farriers, helps to improve hoof quality and is also used as a treatment for dry, cracked hooves. It is important to supplement daily because biotin is water soluble, meaning that it is not stored in body fats. It is a sulfur, which contains B Vitamins, and helps in maintaining good growth of the hoof horn. It also acts as a co-factor in many of your horse's enzymatic reactions, essential for the production of fatty acids, glycogen, and proteins. Biotin deficiencies can cause sparse hair growth, dry, scaly skin, lesions, and brittle, cracked hooves. Deformities such as dishing and low heels have been associated with biotin deficiencies. Pyridoxine, or Vitamin B6, is one of 8 B vitamins. It helps the body carbohydrates into fuel, which is used to produce energy. It also help the body metabolize fats and protein and is necessary for healthy skin and hair. Zinc proteinate is also important for the proper maintenance of skin and hair, as well as bones, muscles and blood. Bio-Hoof also includes antioxidants, nutrients that prevent or slow the oxidative damage to your horse's body. When her cells use oxygen, free radicals, which can cause damage, are by-products that are produced. Antioxidants are free radical scavengers and work to prevent and repair damage done by these free radicals.