I'm also confused foot or face?but for anybody with facial neuralgia I had it for two years it was complete agony had teeth out tried everything ,New Era tissue salts kept me from losing my mind,find them in any health shop,there is a large range so read them all and you will soon find the one you need,there are no side effects and can even be given to children and animals,an awful lot of vets use them as well,it was twenty years ago for me and it has'nt returned.