You should not take Ornidazole tablets four hours after drinking alcohol. Because ornidazole is a kind of nitroimidazole antibiotic, it will produce disulfiram-like reaction with alcohol, which may lead to flushing, nausea, vomiting, panic, shortness of breath, cardiac arrhythmia, drop in blood pressure and other symptoms, and in serious cases, it may even be life-threatening. Whereas alcohol is generally not fully metabolized four hours after drinking. Within a week after drinking alcohol, if you take ornidazole tablets are likely to be disulfiram-like reaction. If you take ornidazole tablets by mistake after drinking alcohol, you must observe whether the above symptoms occur. If the patient has the disulfiram-like reaction mentioned above, he should go to the regular hospital in time to consult the doctor and carry out targeted treatment under the doctor’s guidance in order to reduce the adverse effects of the drug.