起效

起效	qǐ xiào	(of a medicine, poison, strategy, action etc) to begin to produce its effect; to start working
起	qǐ	to rise / to raise / to get up / to set out / to start / to appear / to launch / to initiate (action) / to draft / to establish / to get (from a depot or counter) / verb suffix, to start / starting from (a time, place, price etc) / classifier for occurrences or unpredictable events: case, instance / classifier for groups: batch, group
效	xiào	variant of 效
效	xiào	to imitate (variant of 效)
效	xiào	variant of 效
效	xiào	effect / efficacy / to imitate