目的减少临床不合理联合药。方法从药理学的角度对临床上一些不合理的联合用药处方进行分析,指出其错误所在。结果不恰当的联合用药可能降低疗效,产生毒性反应或引起药源性疾病,并增加患者精神负担和经济负担。结论临床医师应对药物的药理作用及药物间的协同作用充分了解,避免出现不合理的联合用药。 Objective to reduce clinical unreasonable combination drugs. Methods From the perspective of pharmacology, we analyzed some unreasonable combination prescriptions in clinical practice and pointed out the mistakes. As a result, improper combination therapy may reduce the curative effect, produce toxic reactions or lead to drug-induced diseases, and increase the mental burden and financial burden of the patients. Conclusion Clinicians should fully understand the pharmacological effects of drugs and the synergy between drugs to avoid unreasonable combination.