noun
accelerant; stimulating agent; accelerating agent
Pharmacological term for a substance that speeds up or stimulates a biological process or chemical reaction.
この促進薬は代謝を上げる効果がある。
This accelerating agent has the effect of boosting metabolism.
新薬の促進薬としての作用を調べる。
We investigate the action of the new drug as a stimulating agent.
促進剤 is a more general term for accelerator or promoter, used in both chemical and figurative contexts, while 促進薬 is specifically a pharmaceutical agent.
Compound of 促進 (acceleration, promotion) and 薬 (drug, medicine).