Metronidazole

Metronidazole is bactericidal and is used primarily against anaerobes and certain protozoans.

Metronidazole is active against all obligate anaerobic bacteria and certain protozoan parasites (eg, Trichomonas vaginalis , Entamoeba histolytica , Giardia lamblia).It is used primarily for infections caused by obligate anaerobes (eg, intra-abdominal, pelvic, soft-tissue, periodontal, and odontogenic infections, and lung abscess), often with other antimicrobials.

Metronidazole is the drug of choice for bacterial vaginosis. It has been used in Crohn's disease. It is effective in meningitis, brain abscess, endocarditis, and septicemia.