速そっ効こう

noun

speedy effect; quick results; immediate action

Often used for medicines, treatments, or measures that take effect quickly. Contrasts with 遅効 (delayed effect).

See also: 遅効

• この薬くすりは速そっ効こうがあるので、すぐに痛いたみが治おさまります。

  This medicine has a speedy effect, so the pain will subside quickly.

• 速そっ効こう性せいの肥ひ料りょうを使つかうと、植しょく物ぶつがすぐに元げん気きになります。

  Using a quick-acting fertilizer will quickly revive the plants.