药物相互作用是两种或两种以上药物同时或序贯应用时，引起其中一药或多药的效应发生改变。目前临床上不少疾病可用多种药物治疗，且随着人口老龄化及主要疾病谱的变化，慢性疾病增多，同一病人同时应用多种药物已很常见。联合应用的目的在于提高疗效，但因多数药物均有一定的 Drug interactions are two or more drugs when used simultaneously or sequentially, causing the effect of one or more drugs to change. At present, many diseases can be treated clinically with various drugs. As the population ages and the main disease spectrum changes, chronic diseases increase. In the same patient, it is common to use multiple drugs at the same time. The combined use of the purpose is to improve the efficacy, but because of the majority of drugs are certain