Drug interactions
Itraconazole + Pralsetinib
Severity: Major
Itraconazole and Pralsetinib: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Itraconazole raises pralsetinib exposure by inhibiting its metabolism. This may increase risks of pneumonitis, hepatotoxicity, hypertension and hemorrhage.
What this interaction means in plain words
Itraconazole and Pralsetinib can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Itraconazole belongs to Anti Fungals; Pralsetinib belongs to Oncology.
Why it happens
Strong CYP3A4 and P-glycoprotein inhibition reduces pralsetinib clearance.
What to do
Avoid if possible. If unavoidable, reduce the pralsetinib dose per labeling and monitor liver function and for toxicity.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Itraconazole
- Alfuzosin + Itraconazole Contraindicated
- Alprazolam + Itraconazole Contraindicated
- Avanafil + Itraconazole Contraindicated
- Conivaptan + Itraconazole Contraindicated
- Dihydroergotamine intranasal + Itraconazole Contraindicated
- Dihydroergotamine + Itraconazole Contraindicated
Other interactions of Pralsetinib
Frequently asked questions
Can I take Itraconazole with Pralsetinib?
MediHelp rates the interaction as major. Itraconazole and Pralsetinib can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Itraconazole raises pralsetinib exposure by inhibiting its metabolism. This may increase risks of pneumonitis, hepatotoxicity, hypertension and hemorrhage.
How serious is the interaction between Itraconazole and Pralsetinib?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid if possible. If unavoidable, reduce the pralsetinib dose per labeling and monitor liver function and for toxicity.
What other medicines interact with Itraconazole?
MediHelp also lists interactions of Itraconazole with, for example, Alfuzosin, Alprazolam, Avanafil. The full list is on the Itraconazole page.
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