目前药物品种不断增多 ,不合理用药现象也随之出现 ,因此带来的严重不良反应也随之增多 ,归纳如下。1　药物选用不合理临床医师对药物方面的知识了解不全面 ,没有根据患者的实际情况与药物的特点正确选用药物 ,造成不应出现的严重不良反应。例如许多药物经由肝脏生物转化、解毒 At present, the variety of drugs is increasing, irrational medication phenomenon also appears, so the serious adverse reactions also increase, summarized as follows. 1 unreasonable selection of drugs Clinicians do not understand the full knowledge of drugs, not according to the actual situation of patients with the characteristics of the drug properly selected drugs, resulting in serious adverse reactions should not occur. For example, many drugs are biologically transformed via the liver and detoxify