川乌系采用产于四川、陕西等地栽培的毛莨科植物乌头AconitunCarmichailiDebx的干燥块根，近代研究证明乌头中含有6种主要生物碱，其中乌头碱毒性极强，2．5mg即可致死。因品种采集时间、炮制煎者时间不同，毒性差别很大。不同地区的附子（川乌的子根加工品称、为附子）毒性测 The Chuanwu system uses the dried roots of the Aconitum Carichaili Debx, a ranunculaceae plant cultivated in Sichuan and Shaanxi provinces. Modern studies have shown that Aconitum contains six major alkaloids, of which aconitine is extremely toxic, 2.5mg can lethal. Because of the time of species collection and the time of cooking the fryers, the toxicity varies greatly. Toxicity test of Aconite in different regions (measured by sub-root processing of Chuanwu)