Drug interactions
Fluticasone + Posaconazole
Severity: Major
Fluticasone and Posaconazole: major interaction.
Last updated Sources: US FDA label
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
Posaconazole is a strong CYP3A4 inhibitor and can raise systemic fluticasone exposure. This may lead to Cushing syndrome and adrenal suppression, particularly with prolonged use.
What this interaction means in plain words
Fluticasone and Posaconazole 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.
Fluticasone belongs to Respiratory; Posaconazole belongs to Anti Fungals.
Why it happens
Strong CYP3A4 inhibition by posaconazole decreases fluticasone clearance.
What to do
Avoid long-term coadministration; consider beclometasone as an alternative. If the combination is needed, monitor for Cushingoid signs and adrenal suppression.
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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References
Other interactions of Fluticasone
Other interactions of Posaconazole
- Artemether + Posaconazole Contraindicated
- Avanafil + Posaconazole Contraindicated
- Cobimetinib + Posaconazole Contraindicated
- Conivaptan + Posaconazole Contraindicated
- Dihydroergotamine intranasal + Posaconazole Contraindicated
- Dihydroergotamine + Posaconazole Contraindicated
Frequently asked questions
Can I take Fluticasone with Posaconazole?
MediHelp rates the interaction as major. Fluticasone and Posaconazole 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. Posaconazole is a strong CYP3A4 inhibitor and can raise systemic fluticasone exposure. This may lead to Cushing syndrome and adrenal suppression, particularly with prolonged use.
How serious is the interaction between Fluticasone and Posaconazole?
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 long-term coadministration; consider beclometasone as an alternative. If the combination is needed, monitor for Cushingoid signs and adrenal suppression.
What other medicines interact with Fluticasone?
MediHelp also lists interactions of Fluticasone with, for example, Atazanavir, Clarithromycin, Cobicistat. The full list is on the Fluticasone page.
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