英语语法分析

Expectorants are commonly used as a herd treatment and are administered in the drinking water.

祛痰剂常用作猪群治疗药，可加到饮水中喂给。

Does not recommend to the COPD patient when the prevention the respiratory infections rule use oral administration expectorants.

不推荐对COPD患者在预防下呼吸道感染时规律使用口服祛痰药。

OTC cough and cold products include decongestants, expectorants, antihistamines, and antitussives (cough suppressants) for the treatment of colds.

OTC感冒和止咳药物包括用于控制感冒症状的血管收缩剂、化痰药、抗组胺药及止咳。