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Under the National Health Insurance system, the prescriptions of traditional
Chinese medicine (TCM) doctors have mainly been changed from decoction forms
to concentrated preparations. This alteration in the prescription pattern of TCM
may also have significant effect on prescription dosage. The common prescription
methods of combined several formula prescriptions (疊方) of concentrated
preparations often results in prescriptions of a variety of contents and possible low
dose of a single herbs, which may not reach the minimum effective concentration.
This article aims to understand the prescribed dosage of current TCM doctors,
to clarify the differences and conversions between decoctions and concentrated
preparations, and finally to discuss the problems enered in the prescription
pattern of concentrated preparations and possible solutions.
Our study found that most commonly used concentrated preparations were
powder like preparations. The concentrated formulas are based on the “Official
Standard Formula”, and the dosage of the ingredients in the concentrated
preparations are mostly lesser than the dosage generally used in decoctions.
However, there is no obvious pro and cons in the extraction efficiency and
human absorption of the active ingredients between decoctions and concentrated
preparations. In addition, the use of combined several formula prescriptions is now
the norm for concentrated prescriptions. However, due to the limitation of daily
TCM prescription cost and insurance payments, there may be doubts that the dose
of a single herbs in a prescription may not be sufficient to achieve an effective
therapeutic concentration. Therefore, we suggest that the principle of prescription
should be based on making a definite diagnosis, establishing priority of treatment,
prescribing a prescription for the core pathogenesis, and simplifying the use of
items of TCM prescription. Thereafter the prescription can be simplified and the
dosage of each single herbs in the prescription can be streamlined to achieve
effective treatment.
【Keywords】Traditional Chinese medicine (TCM); concentrated preparations of
TCM; decoction of TCM; dosage; formula
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254.4 濃縮中藥（科學中藥）處方劑量探討
