Is the remedy "par excellence" for wounded or injured nerves; from simple punctures from nails, splinters, pins, rat bites, etc., to severe concussions of the spine and brain, and especially to parts rich in centient nerves. It is to this kind of injuries what Arnica, Hamamelis, Ruta, etc., are to bruises, and Calendula to lacerated muscular tissue, and Staphisagria to cuts with sharp instruments.