Metronidazole

Nitroimidazole
Drug Class
Nitroimidazole
Mechanism of Action (MOA)
Forms toxic free radicals that damage microbial DNA (anaerobes & protozoa).
Black Box Warning
Carcinogenicity: shown to be carcinogenic in animal models (mice/rats); avoid unnecessary use — reserve for approved indications.
Clinical Notes
Labeled for anaerobes, trichomoniasis, amebiasis; BV via vaginal gel/ER tablet. Disulfiram-like reaction with alcohol.
Source
FDA label

Sources

Reviewed September 2026
  1. FDA label — FDA / DailyMed

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Used for

Same family

Other antibiotics · 10 drugs

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