noun
treatment efficacy; therapeutic effect
Technical term used in medical, pharmacological, and clinical contexts to describe how well a treatment works.
この新薬の治効は臨床試験で確認された。
The treatment efficacy of this new drug was confirmed in clinical trials.
治効を高めるために、投与量を調整する必要がある。
To enhance the therapeutic effect, the dosage needs to be adjusted.
Compound of 治 (chi, 'heal, cure') and 効 (kō, 'effect, efficacy'). The exact historical derivation is uncertain, but the word is a straightforward Sino-Japanese technical coinage.