中药煎煮前不要清洗。这是因为:水洗可使药材的水溶性成分丢失。由于不少药材中含有糖和甙类,这类物质可溶解于水中,经水洗后,将丢失一部分有效成分,导致药效降低。 另外,水洗可使粉末类药材丢失。中药中又有不少药材是粉末类的,也有的在配药时需要研碎,如桃仁、龙骨、滑石粉等,如果用水洗,会造成这 Do not wash before boiling Chinese herbs. This is because: Washing can make the water-soluble ingredients of herbs lost. Because many herbs contain sugar and glycosides, these substances can be dissolved in water. After washing with water, some of the active ingredients will be lost, leading to reduced efficacy. In addition, water washing can make powder medicines lost. In traditional Chinese medicine, there are many kinds of medicinal materials that are powdered, and some of them need to be crushed when they are dispensed, such as peach kernels, keels, talcum powder, etc. If they are washed with water, this will cause this.