When an adult has a cough, first of all, medication should be taken according to the cause of the cough. If the cough is caused by an upper respiratory tract infection such as laryngitis, it can be treated with oral antiviral medication, such as Pudilan Anti-inflammatory Oral Liquid or Blue Scutellaria Oral Liquid. If the cough is severe, you can also take cough suppressant medications, such as Compound Licorice Combination. If the cough is caused by an infection of the lower respiratory tract, such as bronchitis or pneumonia, it is likely that a bacterial infection will occur and often requires antibiotics. If there are allergies to these two drugs, oral azithromycin or roxithromycin can be used for treatment. If there is a lot of phlegm, you can also take phlegm-reducing medications, such as pulmonary cough combination or compound fresh bamboo liquid. If the cough is allergic, anti-allergy medications such as Desloratadine should be taken.