Drinking alcohol after taking cephalosporin, which is prone to disulfiram reactions at this time, can cause life-threatening and serious poisoning symptoms, and you should seek immediate medical attention and monitor changes in vital signs. You should drink a lot of water and observe your symptoms closely. This reaction may cause physical discomfort in mild cases and even death in severe cases. If you want to drink alcohol, you should stop taking the drug for a week or more before doing so. Although disulfiram reaction does not occur in everyone, it causes very serious and even life-threatening consequences, so again, you must not drink alcohol after taking oral or sedative cephalosporins, and drinking should wait for more than a week after stopping the medication.