If the cough with phlegm is caused by inflammation in the throat, it can be treated by taking anti-inflammatory and antipyretic drugs such as roxithromycin tablets and silver forsythia pills. 2. The actual cough is a result of the lower respiratory tract infections such as the trachea and bronchial tubes, which can be treated with antibiotics and phlegm-cleansing drugs. You can also take azithromycin and other erythromycin antibiotics, together with the oral solution of compound forcodine to relieve cough and phlegm. 3, clinically you can also treat by nebulization, which can quickly relieve the patient’s cough and cough symptoms.