升麻

味辛．入手阳明手太阴足太阴经．功专升发．火在上非升不散．气陷下非升莫举．惟东垣善用之．得葱白散手阳明风邪．得石膏止阳明齿痛．得柴胡引生气上升．得葛根发阳明之汗．阴虚火动者忌．去须芦用．