You should not drink cough syrup after drinking alcohol, you need to metabolize the alcohol completely before using the medication. If you have just finished drinking, it is not recommended to use cough syrups and other medications immediately. Whether the cough syrup is made of Chinese or Western medicines, the user is not entirely sure whether it will interact with alcohol and lead to other adverse reactions such as nausea and vomiting, dizziness and fatigue. It is not safe to use the drug in this case, and it is recommended to wait until the alcohol is completely metabolized before using the drug. The time for alcohol metabolism may take 1~2 days or even longer depending on the individual’s physical condition. Moreover, it is not recommended to drink alcohol in the state of illness, as it will aggravate the condition and may easily have adverse reactions with the medication. In addition, it is not recommended to drink alcohol when accompanied by coughing symptoms, which may aggravate the symptoms, especially in chronic diseases such as chronic bronchitis and chronic obstructive pulmonary disease. If a chronic cough occurs, it is recommended that the patient consult a doctor in a timely manner, improve the examination, and actively treat the cough, during which it is not recommended to drink alcohol.