读者唐女士打来电话咨询,说她孩子4岁,小时候得过肺炎,一到冬天就容易咳嗽,一咳就是半个月。她想知道有没有比较好的治疗小儿咳嗽的药物,购买时该如何选择?我们请专家针对读者的问题做一解答。中枢镇咳药用于剧烈干咳止咳嗽药根据其作用机制可分为中枢镇咳药和外周镇咳药。中枢镇咳药是通过抑制延髓中的咳嗽中枢起到迅速止咳的作用,中枢镇咳药又可再细分为麻醉性和非麻醉性两类。麻醉性镇咳药含有磷酸可待因和盐酸麻黄 Reader Ms. Tang called to call her child 4 years old, had pneumonia as a child, one easy to cough in winter, a cough is half a month. She would like to know if there is a better treatment of pediatric cough medicine, the purchase of how to choose? We ask experts to answer the reader’s questions. Central cough medicine for severe dry cough cough medicine according to its mechanism of action can be divided into central antitussive and peripheral antitussive. Central Antitussive is by inhibiting the cough in the medulla play a central role in the rapid cough, the central antitussive can be subdivided into two categories of narcotic and non-narcotic. Narcotic antitussives contain codeine phosphate and ephedrine hydrochloride