noun
experimental drug; investigational drug
Refers to a drug being tested in clinical trials or research, not yet approved for general use. Often used in medical and pharmaceutical contexts.
See also: 治験薬
この試験薬はまだ承認されていない。
This experimental drug has not been approved yet.
治験で新しい試験薬の効果を調べる。
We investigate the efficacy of a new investigational drug in a clinical trial.
Compound of 試験 (test, experiment) and 薬 (drug, medicine).