What should be checked before prescribing metronidazole (flagyl) to a patient?

Checking alcohol consumption is essential before prescribing metronidazole because it can lead to a disulfiram-like reaction when alcohol is ingested. This reaction includes symptoms such as flushing, nausea, vomiting, and palpitations, which can be severe and uncomfortable for the patient. Because metronidazole inhibits the metabolism of alcohol, patients are strongly advised to avoid alcohol during and for at least 48 hours after treatment.

Understanding the potential interactions between metronidazole and alcohol helps ensure patient safety and improves adherence to the medication regimen. Monitoring for alcohol consumption is an important safeguard in preventing adverse reactions that could lead to complications and affect a patient’s willingness to follow treatment guidelines.