Methods To observe the liquid s effect of anti-cough by the methods of guinea pig cough caused by the ciric acid spraying,mouse cough caused by ammonia spraying and phenol redexpectoration test.

• 方法通过豚鼠枸缘酸引咳、小鼠氨水引咳、肺酚红排泄等试验,并将紫胡止咳液与止咳枇杷冲剂进行对比,验证紫胡止咳液的止咳作用。