Metronidazole can only be consumed after 7 days of discontinuation. If alcohol is consumed during the period of use and within 7 days of discontinuation, or if alcoholic beverages are consumed, it may cause a disulfiram-like reaction, causing patients to experience uncomfortable symptoms such as flushing, rapid heartbeat, abdominal pain, headache, dizziness, etc., endangering the health of patients. Metronidazole is an antibiotic, the main antibacterial spectrum of the drug is anaerobic bacteria, clinical mainly used for infections caused by anaerobic bacteria, such as periodontitis, pelvic inflammatory disease, can also be used to treat vaginal trichomoniasis, intestinal amebiasis, the effect is very good. It is recommended to take the drug half an hour after meals to reduce the occurrence of gastrointestinal reactions.