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长期以来,汤剂是中医防病治病最常用的剂型,其原因,除了它的处方组成和用量可随证加减以适应辨证施治的要求外,由于“去渣取汁”的制备方法保留了较全面的化学成分,因而在药效上呈现出各成分的综合效应,这正是中药突出的特点,应该说这一因素也是重要的原因之一。之后出现的浓缩丸、煎膏剂、浸膏片、糖浆、合剂、冲剂、注射剂及口服液等等都是在汤剂的基础上形成和发展起来的,所有源于汤剂的制剂在制备的过程中,共同的工序就是均需经过提取操作。提取工艺是否合理与制剂的疗效密切相关,因此在拟定提取工艺时,应该充分考虑吸取汤剂的制备原理、方法和特点。
For a long time, decoction is the most commonly used dosage form for prevention and treatment of traditional Chinese medicine. The reason for this is that in addition to its prescription composition and dosage, it can be added or subtracted with the permit to meet the requirements of syndrome differentiation treatment, due to the preparation method of “de-slag extraction”. The more comprehensive chemical composition is preserved, and therefore the comprehensive effect of each component is shown in the efficacy. This is the outstanding feature of Chinese medicine. It should be said that this factor is also one of the important reasons. The condensed pills, decoctions, extracts, syrups, mixtures, granules, injections, and oral liquids that appeared afterwards were formed and developed on the basis of decoctions. All the preparations derived from the decoctions were prepared during the preparation process. In both, the common process is that it needs to be extracted. Whether the extraction process is reasonable is closely related to the efficacy of the preparation. Therefore, in the preparation of the extraction process, the preparation principle, method and characteristics of the decoction should be fully considered.