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*