Pharmaceutical Affairs Act Article 5

The term “investigational medicaments” as used in this Act shall refer to the medicaments whose therapeutic efficacy and safety are not yet verified and which are provided for exclusive use in the pharmacological assessment of toxicity on animals or clinical trials.
中文原文 藥事法第5條
本法所稱試驗用藥物,係指醫療效能及安全尚未經證實,專供動物毒性藥理評估或臨床試驗用之藥物。

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