Drug interactions
Budesonide + Darunavir
Severity: Major
Budesonide and Darunavir: 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
Darunavir, especially when boosted with ritonavir or cobicistat, increases systemic budesonide exposure and can lead to Cushing's syndrome and adrenal suppression. Budesonide does not meaningfully alter darunavir levels.
What this interaction means in plain words
Budesonide and Darunavir 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.
Budesonide belongs to Respiratory; Darunavir belongs to Anti Virals.
Why it happens
Inhibition of CYP3A4 metabolism of budesonide by darunavir and its pharmacokinetic booster.
What to do
Avoid long-term coadministration and consider beclomethasone as an alternative. If used, monitor for Cushingoid features 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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Other interactions of Budesonide
Other interactions of Darunavir
- Alfuzosin + Darunavir Contraindicated
- Avanafil + Darunavir Contraindicated
- Darunavir + Dronedarone Contraindicated
- Darunavir + Eletriptan Contraindicated
- Darunavir + Ergotamine Contraindicated
- Darunavir + Flibanserin Contraindicated
Frequently asked questions
Can I take Budesonide with Darunavir?
MediHelp rates the interaction as major. Budesonide and Darunavir 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. Darunavir, especially when boosted with ritonavir or cobicistat, increases systemic budesonide exposure and can lead to Cushing's syndrome and adrenal suppression. Budesonide does not meaningfully alter darunavir levels.
How serious is the interaction between Budesonide and Darunavir?
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 and consider beclomethasone as an alternative. If used, monitor for Cushingoid features and adrenal suppression.
What other medicines interact with Budesonide?
MediHelp also lists interactions of Budesonide with, for example, Aldesleukin, Atazanavir, Bcg vaccine live. The full list is on the Budesonide page.
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