镇咳宁含片是由《中国药典》2000年版一部收载品种镇咳宁糖浆改变剂型而研制的中药四类新药。
Zhenkening buccal tablet belonged to the forth sort of new drug of Chinese traditional medicine which was developed from Zhenkening syrup in pharmacopoeia (2000 edition) by altering its dosage form.
方法以小鼠氨水引咳法与小鼠酚红祛痰法，观察咳宁方的镇咳、祛痰作用。
Method To observe the effects of relieving cough and expelling phlegm of Kening Formula through ammonia water inducing cough and phenol red apophlegmating in mice.
方法：利用浓氨水喷雾法，枸橼酸喷雾引咳法，毛细玻管引痰法及采用观察小鸭气管纤毛运动的方法来研究信宁咳糖浆在镇咳、祛痰方面的药理作用。
Methods: Observing the incubative period and the times of cough induced by ammonia liquor or citric acid phlegm displacement of rat, the tracheal ciliary movement of duck.
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