Taking Norfloxacin is not recommended for people who drink alcohol. This is because a disulfiram-like reaction may also occur after drinking alcohol while taking Norfloxacin. This reaction, if mild, may be characterized by flushing, panic and chest tightness. If the reaction is more intense, there may be signs of shock, with lowered blood pressure and rapid heart rate. The probability of a reaction is higher if you are normally allergic to the drug. Do not drink alcohol if you are taking Norfloxacin, and if you do, do not take the medicine. The probability of a disulfiram reaction with Norfloxacin is relatively low, but there are still many cases of onset.