Durvet Epsom Salt Poultice is a topical Epsom salt gel for horses designed for external application for temporary relief of minor pains, bruises, and sprains associated with muscle and joint injuries. This poultice for horses relieves soreness and helps relax muscles. Epsom salt provides one of the best poultices for horse legs and can also be used to treat abscessed hooves. Will not burn or blister skin.