煎せん剤ざい

noun

decoction

A liquid preparation made by boiling herbs or other substances to extract their essence, used in traditional medicine.

• 漢かん方ぽうでは、生しょう薬やくを煎せんじて煎せん剤ざいを作つくります。

  In Kampo medicine, crude drugs are boiled to make a decoction.