section name header

Pronunciation

me-troe-NI-da-zole

Classifications

Therapeutic Classification: anti-infectives, antiprotozoals, antiulcer agents

Indications

REMS


Unlabeled Use:

Action

  • Disrupts DNA and protein synthesis in susceptible organisms.
Therapeutic effects:
  • Bactericidal, trichomonacidal, or amebicidal action.

Spectrum:

Pharmacokinetics

Absorption: 80% absorbed after oral administration. Minimal absorption after topical or vaginal application.

Distribution: Widely distributed into most tissues and fluids, including CSF.

Metabolism/Excretion: Partially metabolized by the liver (30–60%), partially excreted unchanged in the urine, 6–15% eliminated in the feces.

Half-Life: Neonates: 25–75 hr; Children and adults: 6–12 hr.

Time/Action Profile

(PO, IV = plasma concentrations; topical = improvement in rosacea)

ROUTEONSETPEAKDURATION
POrapid1–3 hr8 hr
PO-ERrapidunknownup to 24 hr
IVrapidend of infusion6–8 hr
Topical3 wk9 wk12 hr
Vaginalunknown6–12 hr12 hr



Contraind./Precautions

Contraindicated in:

Use Cautiously in:

Adv. Reactions/Side Effects

Derm: ACUTE GENERALIZED EXANTHEMATOUS PUSTULOSIS (AGEP), DRUG REACTION WITH EOSINOPHILIA AND SYSTEMIC SYMPTOMS (DRESS), rash, STEVENS-JOHNSON SYNDROME (SJS), TOXIC EPIDERMAL NECROLYSIS (TEN), urticaria,

topical only

burning, mild dryness, skin irritation, transient redness

EENT: hearing impairment, optic neuropathy, tearing (topical only)

GI: abdominal pain, anorexia, nausea, diarrhea, dry mouth, furry tongue, glossitis, unpleasant taste, vomiting

Hemat: leukopenia

Local: phlebitis at IV site

Neuro: dizziness, headache, aseptic meningitis (IV), encephalopathy (IV), peripheral neuropathy, psychosis, SEIZURES

Misc: superinfection

Interactions

Drug-drug:

Route/Dosage

Availability

(Generic available)

Assessment

Lab Test Considerations:

Implementation

IV Administration:

Patient/Family Teaching

Evaluation/Desired Outcomes

US Brand Names

Flagyl, Likmez, MetroCream, MetroGel, MetroLotion, Noritate, Nuvessa, Vandazole

Canadian Brand Names

Nidagel

Code

NDC Code