Their different expectorant effects on the tracheal phenol red secretion in mice and the esophageal mucociliary transport in frog were observed.

• 结果:复方组、无氯组、氯化铵组均能增强小鼠气管酚红排泌量,加快青蛙食道纤毛运动的速度,但复方组的作用强度明显优于无氯组或氯化铵组。