Which antibiotic is least suitable to take when consuming alcohol?

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Study for the Foundation Year Pharmacy – Clinical Practice Test. Prepare with detailed questions, step-by-step explanations, and test format insights. Enhance your readiness and confidence!

Multiple Choice

Which antibiotic is least suitable to take when consuming alcohol?

Explanation:
Metronidazole has a unique risk with alcohol: it can trigger a disulfiram-like reaction, causing flushing, rapid heartbeat, nausea, vomiting, headache, and sometimes dizziness. That unpleasant and potentially dangerous reaction makes it the least suitable to take with alcohol, so it’s best avoided during therapy and for a period after finishing the course. The other antibiotics listed do not cause this disulfiram-like interaction with alcohol. While alcohol can sometimes worsen stomach upset or affect how you feel in general, amoxicillin, doxycycline, and cefalexin don’t carry the same specific reaction risk, so they’re not avoided for that reason.

Metronidazole has a unique risk with alcohol: it can trigger a disulfiram-like reaction, causing flushing, rapid heartbeat, nausea, vomiting, headache, and sometimes dizziness. That unpleasant and potentially dangerous reaction makes it the least suitable to take with alcohol, so it’s best avoided during therapy and for a period after finishing the course.

The other antibiotics listed do not cause this disulfiram-like interaction with alcohol. While alcohol can sometimes worsen stomach upset or affect how you feel in general, amoxicillin, doxycycline, and cefalexin don’t carry the same specific reaction risk, so they’re not avoided for that reason.

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