方剂一般说是由二味以上的药物组成。药与药的组合,必然发生药物间的相互作用,产生相须、相使、相畏、相杀、相反的配伍关系,所以说,方剂组成的每味药都不是孤立的,其作用机制也不是各药的简单相加,而是彼此间相互影响、相互作用综合反应的结果。它可以出现组成药物所没有的新的作用,同时也会丧失其组成药物所具有的某些性质和功用。如大萸附子汤中, Formulas generally consist of two or more drugs. The combination of drugs and medicines will inevitably lead to the interactions between drugs, resulting in the relationship between phase, must, phase, killing, and vice versa. Therefore, the taste-composition medicine is not isolated, and its mechanism of action is also It is not the simple addition of each drug, but the result of a comprehensive reaction that interacts and interacts with each other. It can present new functions that are not found in the constituent drugs and at the same time lose some of the properties and functions of its constituent drugs. Such as Daxu Aconite Tangzhong,