感冒咳嗽时,面对药店里品种繁多的药物,该如何选择止咳祛痰药呢?镇咳药俗称止咳药,常用的镇咳药分为中枢性镇咳药和外周性镇咳药。前者作用于咳嗽中枢,后者作用于中枢以外的部位。外周止咳药主要是通过降低呼吸道感觉神经末梢对刺激的敏感性而产生止咳效果。 Cold cough, the face of a wide variety of drug stores, how to choose cough expectorant? Antitussive commonly known as cough medicine, commonly used antitussive divided into central antitussive and peripheral antitussive. The former acts on the cough center, the latter on the role outside the center of the site. Peripheral antitussive mainly by reducing the respiratory sensory nerve endings on the stimulation of the cough effect.