Results: Erkening Syrup could prominently control coughing reaction of mouse that ammonia water and sulfur dioxide lead to and had prominent advance to sputum secretion of mouse and rat trachea.

• 结果：儿咳宁糖浆可明显抑制氨水及二氧化硫所致小鼠咳嗽反应，对小鼠和大鼠气管痰液分泌具有明显促进作用。