It is still useful to drink more water when cough symptoms appear. Firstly, drinking more water can moisten the airway, which tends to aggravate the cough when the airway is dry. Secondly, drinking more water can moisten the airways, dilute phlegm and promote the discharge of phlegm, which will be more effective for coughs caused by respiratory infections. Once again, when you drink more water, the amount of urination will increase, and urination can discharge excess toxins from the body. In most cases, coughs occur due to respiratory infections, and the body will produce more toxins, so it is good to urinate more and discharge toxins at this time to promote recovery from coughs. Therefore, drinking more water during coughing is still beneficial. Finally, when you have a cough, you need to take cough and phlegm medicines, such as aminoglutethimide oral solution, lung power cough combination, and compound fresh bamboo liquid, all of which are more effective.