Metronidazole is a nitroimidazole antibiotic that inhibits DNA synthesis. Metronidazole displays antibacterial and anti-protozoal activities against anaerobic bacteria and protozoa, including species of Clostridium and Trichomonas.
References
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Raether W, Hänel H. Nitroheterocyclic drugs with broad spectrum activity. Parasitol Res. 2003 Jun;90 Supp 1:S19-39. PMID: 12811546.