Taking metronidazole in the morning and not drinking alcohol at night, the nitroimidazole in metronidazole and the ethanol in alcohol are prone to disulfiram-like reactions, which are usually manifested as facial flushing and dizziness in mild cases, and a drop in blood pressure and dyspnea in severe cases. Metronidazole is mostly metabolized by the liver, and alcohol is also metabolized by the liver, drinking alcohol during the use of medication will aggravate the burden on the liver and cause abnormalities in liver function. When using metronidazole medication, it is generally necessary to stop the drug for more than a week, the body of the drug is completely metabolized before you can drink alcohol, it is best not to drink alcohol. Please standardize the use of metronidazole under the advice of a doctor, do not use the drug without authorization to avoid adverse consequences.