Is the alcohol warning with metronidazole real?

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  • Post
    • September 7, 2026 at 3:24 am
    tide_line
    Participant

    Given a course and told absolutely no alcohol, including for days afterwards. A pharmacist friend says the interaction is largely a myth. Who is right?

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Member experience, not medical advice. Symptoms overlap between infections and only a test can tell them apart.
  • Replies
    • September 8, 2026 at 12:24 am
    northwindow
    Participant

    Your friend is closer to the evidence than the leaflet is. The supposed disulfiram like reaction with metronidazole has been looked at repeatedly and the evidence for it is thin. A small controlled study found no reaction and no change in the enzyme the theory depends on.

    The warning stayed in the labelling anyway, which is why you were told it firmly.

    • September 8, 2026 at 11:24 pm
    green_door
    Participant

    That said, I would still follow what your own prescriber told you rather than a forum. Metronidazole on its own can make you feel unwell, and adding alcohol to nausea is its own bad evening even without a special interaction.

    • September 9, 2026 at 10:24 pm
    brown_paper
    Participant

    The instruction that actually affects the outcome is the one about not having sex until you and your partner have both finished treatment. That is the one worth being strict about.

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