Drug interactions
Duvelisib + Itraconazole
Severity: Major
Duvelisib and Itraconazole: 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 is a strong CYP3A4 inhibitor and markedly raises duvelisib exposure. This increases the risk of duvelisib toxicities such as infections, diarrhea or colitis, cutaneous reactions and pneumonitis.
What this interaction means in plain words
Duvelisib and Itraconazole 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.
Duvelisib belongs to Oncology; Itraconazole belongs to Anti Fungals.
Why it happens
Strong inhibition of CYP3A4-mediated duvelisib metabolism.
What to do
Reduce the duvelisib dose to 15 mg twice daily during coadministration with a strong CYP3A4 inhibitor. Monitor closely for duvelisib toxicity, and return to the previous dose after the inhibitor is stopped.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Duvelisib and Itraconazole, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
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 Duvelisib
- Duvelisib + Ergotamine Contraindicated
- Alfuzosin + Duvelisib Major
- Apalutamide + Duvelisib Major
- Avanafil + Duvelisib Major
- Carbamazepine + Duvelisib Major
- Chloramphenicol + Duvelisib Major
Frequently asked questions
Can I take Duvelisib with Itraconazole?
MediHelp rates the interaction as major. Duvelisib and Itraconazole 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 is a strong CYP3A4 inhibitor and markedly raises duvelisib exposure. This increases the risk of duvelisib toxicities such as infections, diarrhea or colitis, cutaneous reactions and pneumonitis.
How serious is the interaction between Duvelisib and Itraconazole?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reduce the duvelisib dose to 15 mg twice daily during coadministration with a strong CYP3A4 inhibitor. Monitor closely for duvelisib toxicity, and return to the previous dose after the inhibitor is stopped.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
