Brand Names:

Drug Type: Antiprotozoal, Antibiotic


Ronidazole is a nitroimidazole antibiotic/antiprotozoal drug used to treat hexamitiasis, trichominasis, and giardiasis. It comes from the same family as metronidazole, however is much more effective than metronidazole in treating canker. Ronidazole is considered to be possibly carcinogenic. The FDA prohibits its use in food animals in the United States. Human contact should be minimized (always wear gloves).
  • 0.1-0.2 g/L drinking water, QD
  • Cimetidine, and Ketoconazole decrease the metabolism of Ronidazole, and could increase the incidence of neurotoxicity.
  • Ronidazole should not be used with Oxytetracyclines, Phenobarbital, Rifampin, or Phenytoin. These drugs either antagonize or increase the metabolism of Ronidazole.