中药汤剂需要先煎的,一般大多为矿物,贝壳类质地坚硬的药物,这类药物主要含难溶或微溶于水的无机化合物,按照传统的用药习惯,有些需要煅后打碎入药煎煮,以利于药效的发挥,有时为了加大药物疗效,人为增加用药剂量。但加大用量后,其煎出物究竟改变多少,未见这方面报道,为此作以下 Traditional Chinese medicine decoctions need to be fried first. Most of them are minerals and hard shellfish. These drugs mainly contain insoluble or slightly water-soluble inorganic compounds. According to the traditional medication habits, some of them need to be crushed after being calcined. Cooking, in order to facilitate the play of efficacy, sometimes in order to increase the efficacy of drugs, artificially increase the dose. However, after increasing the amount, how much did the frying matter change, there was no report in this regard, and for this purpose, the following