Drinking beer after taking cephalosporin is not allowed and can easily lead to a disulfiram reaction. Although the alcohol content of beer is slightly lower than that of white wine, it can easily cause a disulfiram reaction when combined with cephalosporins, which is very dangerous and can easily lead to death. After taking cephalosporin and drinking beer, congestion will occur, and blood vessels in the conjunctiva or head will become congested, causing headaches and blurred eyes. It can also lead to violent vascular pulsations and even vascular pulsating headaches. If the patient is more serious, there is also the possibility of serious liver and kidney function damage, myocardial infarction or serious respiratory failure or heart failure, all very dangerous. Therefore, you should never drink beer or any alcohol when taking cephalosporin. Generally, you need to drink alcohol after taking cephalosporin and waiting until the drug has been metabolized for 72 hours, which is relatively safe and will rarely lead to adverse reactions.