Efficacious

奏效

zòuxiào

(effective — see also effective)

有效

yǒuxiào

(effective — see also effective)

療效好 /疗效好

liáoxiào hǎo

(effective — see also effective)

管用

guǎnyòng

(effective — see also effective)

藥效好 /药效好

yàoxiào hǎo

(effective — see also effective)

靈驗 /灵验

língyàn

(effective — see also effective)