Bone/Skin Poultice (formerly BON-C) [Structural] is an ideal herbal substitute for encapsulated comfrey leaf. It contains yarrow flower, mullein leaf, plantain herb and rehmannia root. These herbs offer the same features associated with comfrey leaf and were specifically chosen as an alternative product. Take 2 capsules with a meal three times daily. Mix herb powder with Golden Salve to create a healing poultice. Mix herb powder with Black Ointment to create a soothing poultice.