Antimicrobials
Metronidazole

Metronidazole

Low
Excellent
$/day

Spectrum of Activity

Dosing

General Information

Assess for peripheral/optic neuropathy with prolonged therapy (>6wks) or if symptoms develop.

GI symptoms common - Especially nausea/vomiting and metallic taste.

Peripheral/optic neuropathy with extended therapy.

Disulfiram-like reaction (severe vomiting).

Rare neurotoxicity including aseptic meningitis and encephalopathy.

Myalgias.

Ethanol - Disulfiram-like reaction.

Major substrate CYP2A6 and weak CYP2C9 inhibitor increases levels of:

  • Cyclosporine
  • Lithium
  • Warfarin
  • Phenobarbital
  • Phenytoin

Antimicrobial class: Nitroimidazole

Pregnancy category: B

Average serum half life: 8 hours

Urine penetration: Poor

Lung penetration: Therapeutic

CSF penetration: Therapeutic

Biliary penetration: Therapeutic