Biotin Hoof Blast has the highest concentration of biotin on the market: 100 mg per 2 ounces. When biotin is combined with Methionine, Zinc, MSM and Soy Oil, you get the most powerful, potent hoof supplement available. Farriers swear by it. It will help your horse to grow healthy, strong hooves when fed Biotin Hoof Blast. 100 mg of biotin per dose! This is FIVE times the biotin of most hoof health products. Biotin helps strengthens the hoof structure. Methionine- An essential amino acid that works synergistically with the other hoof nutrients to help to deliver healthy replacement of hoof protein. Zinc Proteinate - Dramatically aids in improving hoof strength and resistance to cracks. MSM- Horse Guard's line of hoof supplements (including Hoof & Hair Guard) are the only hoof supplements on the market that include MSM. MSM is the base of structural proteins contributing to stout, flexible hooves Protein- Biotin Hoof Blast has a soybean base that helps provide a healthy, shiny coat | Horse Guard Biotin Hoof Blast Horse Supplement | Size 4.8 lbs