Antibiotic / Antibiotic

Metronidazole

Nitroimidazole antimicrobial used in prescription contexts for susceptible anaerobic bacterial and protozoal infections. The profile focuses on neurologic symptoms, alcohol/disulfiram cautions, liver context, and infection-specific regimen verification.

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Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.

Reference dosePrescription dosing depends on infection, organism, formulation, liver function, pregnancy context, and clinician-directed duration. Verify official label and current guidance.

Half-lifeIntermediate; commonly around 8 hours, with exposure affected by liver function. hours

Risk flagmoderate

Regulatory noteReview required

Side effects and watch-outs

Nausea
Metallic taste
GI upset
Headache
Dark urine
Peripheral neuropathy risk with longer exposure
C. difficile-associated diarrhea risk