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中药的正负之功,是中药的一大特色,许多中药具有这种作用。所谓正负功效,是指同一种药物能治疗性质相反的病证,即起到正反两方面的治疗作用。这些药物的正负功效除自身独有外,还与多方因素的作用有关,现简略条述如下: 一、药物剂量之多寡药物剂量的大小,直接影响到药物的作用,日本有的学者认为:汉方之秘在于剂量之大小。确为有识之见.中药的正负功效与药量多寡密切相关,举例如下: 大黄:常用为10克左右,后下入煎则有通里攻下作用,久煎则泻下力弱。据近人临床经验,如用量大于30克则泻下力反缓,久服之则下泻作用甚微或不泻。因此要取其通下之功者,以5～10克(后下)或开水冲泡为最佳;故大黄量大久煎通下力弱,量小后下则通下力大。红花:有活血调经之功。李时珍认为,能
The positive and negative power of traditional Chinese medicine is a major feature of traditional Chinese medicine, and many traditional Chinese medicines have this effect. The so-called positive and negative effects mean that the same drug can treat the opposite of the disease, that is, play a positive and negative treatment. The positive and negative effects of these drugs, in addition to their own uniqueness, are also related to the role of multiple factors. They are briefly described as follows: 1. The dose of a drug dose has a direct impact on the role of drugs. Some Japanese scholars believe that: The secret of Kampo is the size of the dose. Is indeed knowledgeable. Chinese medicine’s positive and negative effects are closely related to the amount of the drug, examples are as follows: Rhubarb: commonly used is about 10 grams, after the next into the fried Tongli attack role, long-time frying is diarrhea weak. According to recent clinical experience, if the dosage is greater than 30 grams, the diarrhea force is slowed down, and if the clothing is used for a long time, the diarrhea has little or no diarrhea. Therefore, it is best to use their ability to pass the next, with 5 to 10 grams (after the next) or boiling water for the best; so the amount of long-time fried rhubarb under weak, after a small amount of the next pass under the force. Safflower: There is the power of regulating blood circulation. Li Shizhen thinks that