If you drink alcohol after taking metronidazole, it is very dangerous and can easily lead to disulfiram-like reactions. If there are serious symptoms, you need to go to the hospital immediately for symptomatic treatment, otherwise it is very dangerous. Gastric lavage can be used to reduce the absorption of alcohol in the stomach, and intravenous dexamethasone or naloxone can be used for symptomatic treatment. Intravenous glucose and vitamin C are also needed to protect the liver, because once a disulfiram-like reaction occurs, it is easy to lead to liver damage, and intravenous glucose and vitamin C can also promote the metabolism and excretion of ethanol. If the patient has angina pectoris, he needs to be treated with drugs to improve the coronary arteries, and if the blood pressure drops, he can use drugs to raise the blood pressure.