关于张仲景经方用量问题的再探讨

Re-discussion on dosage of ZHANG Zhong-jing’s classical prescriptions

经方在临床用之多验,其疗效与药物剂量的正确使用密切相关。从考古实物、古代文献记载来推测经方药量折算问题较为科学合理,笔者推测东汉一两合今之13.85~15.31 g。今天经方疗效可靠但用量普遍小于东汉,除煎服法不同外,当与制剂工艺进步、饮片形制不同、加味化裁等因素有关。现代制剂工艺的发展,使得药材饮片较之古代可以更薄、更小、更细、更干,在达到同样疗效的前提下,我们今天的常用量当可以较东汉适度减少,这也符合现代药典的本意。

Classical prescriptions have a very good therapeutic effect in clinic, and their effect is closely related to the correct use of drug dosage. It is more scientific and reasonable to infer the dosage conversion of classical prescriptions from archaeological objects and ancient document records. It is speculated that a Liang of the Eastern Han Dynasty is between 13.85 g and 15.31 g. Today, the curative effect of classical prescriptions is reliable, but the dosage is generally less than that of the Eastern Han Dynasty. In addition to the methods of different decocting and taking drugs, it is also related to the progress of preparation technology, different shapes of decoction pieces, and drug increase or adjustment. With the development of modern preparation technology, the decoction pieces can be thinner, smaller, slimmer and drier than those in ancient times. On the premise of achieving the same curative effect, the common dose used today can be moderately reduced compared with that in the Eastern Han Dynasty, which is also in line with the original intention of the modern pharmacopoeia.