中药中有的同一种药物兼具两种相反功效或主治相反疾病,此所谓“同药反效”。其产生的原因主要有炮制方法、药用部位、配伍以及药性理论的不同,前三种原因并非总是单独存在,三者可以同时影响药效。另外,用药剂量的不同、患者个体差异等因素亦会影响药物功效的发挥,甚至能够产生相反的功效。 Some of the same drugs in traditional Chinese medicine both have the opposite effect or attending to the opposite disease, the so-called “with the drug effect ”. The main reasons for its processing methods, medicinal parts, compatibility and theory of medicinal differences, the first three reasons are not always alone, the three can affect both efficacy. In addition, the dose of different patients with individual differences and other factors will also affect the efficacy of drugs to play, and can even have the opposite effect.