Biotin seems to be the most popular vitamin for hoof care. Most farriers recommend high amounts of it when in fact horses are not usually in need of this vitamin unless they have digestive problems. B Vitamins, including Bitoin, are produced in the hind gut of the horse. Biotin can help to protect the outside of the hoof from moisture, but it is not necessarily involved in the overall growth of the hoof. The hoof is comprised of 95% protein. The horse actually needs collagen to produce keratin which is the strong protein that comprises most of the hoof. Since keratin is a protein, the most important supplement you can give for strong healthy hooves is one that contains amino acids - the building blocks of all protein. Hoof Secret contains necessary ingredients for hoof growth and strength. We don't use excess amounts of Biotin because it is not necessary! Finally, a hoof formula that really works! If your horse's hooves are not healthy chances are his diet is lacking. Insufficient amounts of certain amino acids can be a serious problem. A horse also needs Vitamin C to produce collagen which is necessary for healthy hooves. Zinc, Copper and Silica are also a must. Increasing the circulation to the hoof with herbs is one of the best things to do. Hoof Secret will give your horse the extras! INGREDIENTS: L-METHIONINE - An essential amino acid that promotes collagen production. L-THREONINE - Another essential amino acid responsible for collagen production. L-LYSINE - An amino acid that is responsible for collagen production. Studies have shown it to be lacking in most feeds. YUCCA - Increases circulation, boosts the immune system. ROSEHIPS - High in Vitamin C, Selenium and Zinc. NETTLE - Contains Selenium, Zinc and Sulfur which are all necessary for healthy hooves. CINNAMON - Increases circulation, blocks the enzyme that breaks down collagen. FLAX SEED MEAL - Contains essential fatty acids, promotes strong hooves, bones and skin. Will also make your horse's coat shine! BREWER'S YEAST - Contains 16 different amino acids, essential fatty acids, Calcium, Iron, Phosphorus, Magnesium, Zinc, Copper, Manganese, Chromium, Potassium, and B Vitamins including Biotin. 30 Servings.