Metrondizole is an antibiotic and antiprotozoal medication commonly used to treat various infections, particularly those caused by anaerobic bacteria and certain parasites. It is often prescribed for conditions such as bacterial vaginosis, trichomoniasis, and certain gastrointestinal infections. Metrondizole works by disrupting the DNA of the microorganisms, ultimately leading to their death. It is available in oral, topical, and intravenous forms.