The exact number of days to drink after an infusion cannot be generalized. It depends on the composition of the infusion. If the infusion consists of cephalosporins, alcohol should be consumed at least one week later. If it is a macrolide or penicillin, drink alcohol after at least 3 days. 1. If alcohol is consumed within one week, cephalosporins will have a disulfiram-like reaction with alcohol, which inhibits the enzyme acetaldehyde dehydrogenase, resulting in ethanol not being metabolized properly. Generally there will be dizziness, drowsiness, flushing, and even hypotension, shock and other reactions. Wait until the drug is metabolized in the body before drinking alcohol. 2. Macrolides or penicillin and other drugs in the use, but also to wait more than 3 days before drinking alcohol. Otherwise the drug will react with alcohol and jeopardize one’s health. Specific infusion a few days before you can drink alcohol should go to the regular hospital to consult the doctor, do not decide on your own, generally not recommended to drink alcohol in the short term after the disease.