Which antibiotic is least suitable to take when consuming alcohol?

Which antibiotic is least suitable to take when consuming alcohol?

• A. Amoxicillin
• B. Doxycycline
• C. Metronidazole
• D. Cefalexin

Answer: (C)

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.