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A member asked:
If caffeine constricts blood vessels, and increases metabolism is it possible that it might have an affect on the effectiveness of metronidazole?
5 doctors weighed in across 3 answers
Metronidazole: caffeine has no effect on metronidazole as far as I know but I would not take the two together
Answered 8/1/2015
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Doubtful: It isn't likely that caffeine would have any meaningful effect on the efficacy of metronidazole either directly or indirectly.
Answered 8/1/2015
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Drug interaction: Beware of alcohol and metronidazole interaction. There are many liquid meds which contain alcohol and they can cause you a real problem.
Answered 8/1/2015
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