Absorbine Hooflex Concentrated Hoof Builder is formulated with the essential building blocks to support strong, healthy hooves. Prebiotics and chelated minerals provide high bioavailability for optimal absorption to help your horse make the most out of every pellet. The concentrated formula contains essential chelated minerals, Omega-3 from stabilized flaxseed, prebiotics for easy digestibility, and 24 mg purified biotin per serving. Feed 2 oz. per 1000 lbs. body weight daily. Pellets.