Well known and widely used by early Greeks and Romans, comfrey's botanical name symphytum is derived from the Greek word symphyo, meaning to "make grow together". This refers to its traditional use for healing fractures. Comfrey relieves pain and inflammation caused by injuries and degeneration, especially the symptoms of rheumatoid arthritis and osteoarthritis.
Externally, comfrey leaf can be used as a poultice or compress to treat bruises, sprains, wounds or other trauma. It may also relieve mastitis or trauma to the breast.