You should never drink beer after taking cephalosporin, as it is very dangerous to have a disulfiram reaction. If you drink beer after taking cephalosporin, you will experience facial flushing, congestion of conjunctiva or mucous membrane, blurred vision, and a violent throbbing sensation of blood vessels in the head and neck. In addition, there will be ergogenic headache, dizziness, nausea, vomiting, sweating, dry mouth, chest pain, and in some cases, more serious, even myocardial infarction and acute heart failure. In addition, severe respiratory distress, acute liver function damage, kidney function damage, and convulsions may occur, and in more severe cases, death may occur. Severe drop in blood pressure and accelerated heart rate may also be found during physical examination, so beer should never be consumed after taking cephalosporin antibiotics. No matter which kind of alcohol is not allowed to drink, it is very dangerous. Generally speaking, after taking cephalosporin, you need to take an interval of 72 hours before you can try to drink a small amount of beer.