If it is a very simple clinical tooth extraction, and there is no application of any medication after the tooth extraction, then drinking alcohol is not relevant. However, in the actual clinical operation of tooth extraction, many teeth have chronic inflammation due to more complicated extraction, or the teeth themselves have chronic inflammation before the extraction, and the patients will apply anti-inflammatory drugs during or after the extraction, and drinking alcohol is not recommended in the case of anti-inflammatory drugs. The most commonly used anti-inflammatory drugs are cephalosporins and nitroimidazoles, and cephalosporins can interact with alcohol, which is called a disulfiram reaction, and a serious disulfiram reaction can be fatal. Therefore, if you have a tooth extraction and take cephalosporin, it is advisable not to drink alcohol for a week, and the same goes for metronidazole, which is a nitroimidazole.