半夏是屬于天南星科多年生的草本植物,以小球形的根莖供药用。性辛味平,有毒。是一味疗效很高用途很广泛的药物,是袪痰鎮嘔的圣品;和大黄、附子同为国产药品中之佼佼者,自古以来,在临床应用上,它曾发揮了很大的作用,其药理虽屬不明,而在經驗上说,其功效的肯定,是不容否認的。 Pinellia is a perennial herb belonging to the Araceae, and it is used for the medicinal use of the rhizome of the small sphere. Sex is pungent and toxic. It is a very widely used drug that has a very high efficacy, and it is a sacred product for vomiting; it is also the best among domestic drugs. It has played a very important role in clinical applications since ancient times. Although its pharmacology is unknown, it is empirically stated that the affirmation of its efficacy cannot be denied.