一、几种“大戟”的异同大戟一药始载于《本经》。别名:下马仙,邛巨。大戟可分为五种:即红大戟、京大戟、准大戟、草大戟和棉大戟。它们既不同科又不同属,化学成份也不相同,但均属有毒之药,因有毒故少用。现简介如下: I. The differences and similarities of several “big maggots” are contained in the “Ben”. Alias: Xia Xian, giant. There are five types of Daxies: Red Daxu, Peking University, Quasi-Dagu, Grass Dabu and Cotton Dacheng. They are not only different families but also different genera. Their chemical composition is also different, but they are poisonous drugs and are rarely used because they are poisonous. The brief introduction is as follows: