炮制用醋,主要为米醋,其中以糯米酿造为最佳,亦可用米、麦、高梁及酒糟等酿制而成,它的主要成份为醋酸,约占4～6％,尚含部分有维生素、还原糖、灰分等,一般为黄色至深棕色的澄明液体,有特异的香味,由于醋酸苦味温,善入肝经血分,具有散瘀,止血,杀虫,解毒的功效,疏肝理气,散瘀止痛, 攻下逐水的药物,如柴胡、延胡索、三棱莪术等多用醋进行炮制,主要取其酸入肝的功效。现代医药也证明,醋酸能同药物中的游离生物碱结合生成醋酸盐,从而使药物的溶解度增大,增高,增强了药物的疗效,如延胡索经醋炙后,使生物碱的含量比生延胡索显著增高,从而增强了延胡索的镇痛效果。故 Processed vinegar, mainly rice vinegar, which is best brewed with glutinous rice, can also be brewed with rice, wheat, sorghum and distiller’s grains, its main component is acetic acid, accounting for about 4 to 6%, still contains some vitamins , reducing sugar, ash, etc., generally yellow to dark brown clear liquid, with a specific fragrance, due to the bitter taste of acetic acid, good blood circulation into the liver, with stasis, hemostasis, insecticide, detoxification effect, Shugan qi, Sanyu relieves pain and attacks drugs that use water, such as Bupleurum, Corydalis yanhusuo, and Trigonobasae. The vinegar is used for concocting. The main effect is to take the acid into the liver. Modern medicine has also proved that acetic acid can combine with free alkaloids in medicine to form acetate, so that the solubility of the drug increases and increases, enhancing the efficacy of the drug, such as fumarate after vinegar, so that the content of alkaloids than raw Corydalis significantly increased, thereby enhancing the analgesic effect of Corydalis. So