You should never drink alcohol after taking cephalosporin, because cephalosporin antibiotics and alcohol can easily cause a disulfiram-like reaction, which is very dangerous. If you drink alcohol after taking cephalosporin, you will have facial flushing and congestion, conjunctiva and mucous membranes will also become congested and edematous, and you will also have blurred vision, violent throbbing of blood vessels in the head and neck, or pulsating headache, dizziness, nausea, vomiting, sweating, dry mouth and chest pain, and in some cases, serious myocardial infarction, acute heart failure, and Respiratory distress, acute liver injury, acute kidney injury, syncope and death can occur, so it is very dangerous. Some people may also experience a significant increase in heart rate and decrease in blood pressure. Therefore, it is absolutely not allowed to drink alcohol after taking cephalosporin.