Itraconazole and Vincristine: Drug Interaction Guide
Quick answer: This is a major interaction — avoid combining Itraconazole and Vincristine unless specifically directed by your doctor.
How Itraconazole interacts with Vincristine
Itraconazole strongly inhibits CYP3A4 and P-glycoprotein, reducing vincristine clearance. This can cause severe neurotoxicity, ileus, seizures, and SIADH.
What you should do
Avoid azole antifungals that strongly inhibit CYP3A4 during vincristine therapy. Use alternative antifungal prophylaxis or treatment when possible.
Key facts
Severity
Major — avoid combination
Mechanism
Itraconazole strongly inhibits CYP3A4 and P-glycoprotein, reducing vincristine clearance. This can cause severe neurotox...
Action
Avoid azole antifungals that strongly inhibit CYP3A4 during vincristine therapy. Use alternative antifungal prophylaxis ...
Frequently asked questions
Can I take Itraconazole and Vincristine together?
No — this combination should generally be avoided. Avoid azole antifungals that strongly inhibit CYP3A4 during vincristine therapy. Use alternative antifungal prophylaxis or treatment when possible.
What is the severity of this interaction?
The interaction between Itraconazole and Vincristine is classified as Major — avoid combination. Itraconazole strongly inhibits CYP3A4 and P-glycoprotein, reducing vincristine clearance. This can cause severe neurotoxicity, ileus, seizures, and SIADH.
What should I do if I'm prescribed both?
Avoid azole antifungals that strongly inhibit CYP3A4 during vincristine therapy. Use alternative antifungal prophylaxis or treatment when possible. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.