Drug interactions
Itraconazole + Netupitant / palonosetron
Severity: Minor
Itraconazole and Netupitant / palonosetron: minor 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
Netupitant is mainly metabolized by CYP3A4, so itraconazole can increase its exposure. The product labeling does not require a dose change, but adverse effects such as headache and constipation could become more frequent.
What this interaction means in plain words
Itraconazole and Netupitant / palonosetron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
CYP3A4 inhibition reduces netupitant clearance.
What to do
No dose adjustment is needed; monitor tolerability. Netupitant itself inhibits CYP3A4, so be aware that itraconazole levels may also rise.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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
Frequently asked questions
Can I take Itraconazole with Netupitant / palonosetron?
MediHelp rates the interaction as minor. Itraconazole and Netupitant / palonosetron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Netupitant is mainly metabolized by CYP3A4, so itraconazole can increase its exposure. The product labeling does not require a dose change, but adverse effects such as headache and constipation could become more frequent.
How serious is the interaction between Itraconazole and Netupitant / palonosetron?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose adjustment is needed; monitor tolerability. Netupitant itself inhibits CYP3A4, so be aware that itraconazole levels may also rise.
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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