National Health Insurance Act Article 46

The Insurer shall adjust drug prices based on prevailing market conditions; prices for drugs with patents, which have expired for a year, shall start being lowered; gradual adjustment to reasonable prices shall be made within five years based on prevailing market conditions.The Competent Authority shall determine the operating procedure for the adjustment in the preceding paragraph as well as the relevant rules.
中文原文 全民健康保險法第46條
保險人應依市場交易情形合理調整藥品價格;藥品逾專利期第一年起開始調降,於五年內依市場交易情形逐步調整至合理價格。
前項調整作業程序及有關事項之辦法,由主管機關定之。

English translation for reference only; the Chinese text prevails. Not legal advice.