section name header

Pronunciation ⬇

vor-i-KON-a-zole audio

Indications ⬆ ⬇

REMS

Action ⬆ ⬇

Therapeutic Effects:

Spectrum:

Pharmacokinetics ⬆ ⬇

Absorption: Well absorbed following oral administration (96%); IV administration results in complete bioavailability.

Distribution: Extensive tissue distribution.

Protein Binding: 58%.

Metabolism/Excretion: Highly metabolized by the hepatic P450 enzymes (CYP2C19, CYP2C9, CYP3A4); <2% excreted unchanged in urine. Much individual variation in metabolism; metabolites are inactive. The CYP2C19 enzyme system exhibits genetic polymorphism; 15–20% of Asian patients and 3–5% of Caucasian and Black patients may be poor metabolizers and may have significantly ↑ voriconazole concentrations and an ↑ risk of adverse effects.

Half-life: Dose-dependent (adults 6–9 hrs); ↑ in hepatic impairment.

Contraind./Precautions ⬆ ⬇

Contraindicated in:

Use Cautiously in:

Adv. Reactions/Side Effects ⬆ ⬇

CV: changes in BP, peripheral edema, QT interval prolongation, tachycardia.

Derm: DRUG REACTION WITH EOSINOPHILIA AND SYSTEMIC SYMPTOMS, MELANOMA, SQUAMOUS CELL CARCINOMA, STEVENS-JOHNSON SYNDROME (SJS), TOXIC EPIDERMAL NECROLYSIS, photosensitivity, rash.

EENT: visual disturbances, eye hemorrhage.

Endo: ADRENAL INSUFFICIENCY.

F and E: hypokalemia, hypomagnesemia, hyperglycemia.

GI: HEPATOTOXICITY, abdominal pain, diarrhea, nausea, pancreatitis, vomiting.

MS: fluorosis, periostitis.

Neuro: dizziness, hallucinations, headache.

Misc: chills, fever, infusion reactions.

Interactions ⬆ ⬇

Drug-Drug:

Drug-Natural Products:

Route/Dosage ⬆ ⬇

see Calculator

Invasive Aspergillosis, Scedosporiosis, or Fusariosis

Hepatic Impairment

Candidemia in Non-Neutropenic Patients or Other Deep Tissue Candida Infections

Hepatic Impairment

Esophageal Candidiasis

Hepatic Impairment

Implementation ⬆ ⬇

US Brand Names ⬆ ⬇

Vfend

Classifications ⬆ ⬇

Therapeutic Classification: antifungals

Availability ⬆ ⬇

(Generic available)

Time/Action Profile ⬆ ⬇

(blood levels)

ROUTEONSETPEAKDURATION
POrapid1–2 hr12 hr
IVrapidend of infusion12 hr

Assessment ⬆ ⬇

Lab Test Considerations:

Patient/Family Teaching ⬆ ⬇

Evaluation/Desired Outcomes ⬆ ⬇

Code ⬆

NDC Code*