治ち験けん薬やく

noun

investigational new drug; clinical trial drug

A drug that is being tested in clinical trials and has not yet received marketing approval.

• この治ち験けん薬やくはまだ承しょう認にんされていません。

  This investigational drug has not been approved yet.

• 治ち験けん薬やくの効こう果かを調しらべるために臨りん床しょう試し験けんが行おこなわれている。

  Clinical trials are being conducted to investigate the efficacy of the investigational drug.