The Commission E Monographs Approved Herbs with Similar Uses and Indications as Comfrey root Bruises, Contusions Arnica flower Comfrey herb and leaf Peruvian Balsam St.  John's Wort Sweet Clover Ligaments, Sprained Comfrey herb and leaf Ligaments, Sprained Comfrey herb and leaf Ligaments, Sprained Comfrey herb and leaf