Drug interactions
Nelfinavir + Triamcinolone
Severity: Major
Nelfinavir and Triamcinolone: 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
Nelfinavir may increase triamcinolone exposure, raising the risk of Cushing syndrome and adrenal suppression with repeated or depot doses. Protease inhibitors have caused this with injected triamcinolone.
What this interaction means in plain words
Nelfinavir and Triamcinolone 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.
Nelfinavir belongs to Anti Virals; Triamcinolone belongs to Endocrine.
Why it happens
Nelfinavir inhibits CYP3A4, reducing triamcinolone metabolism.
What to do
Avoid prolonged or repeated triamcinolone with nelfinavir and consider beclomethasone or prednisolone. 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 Triamcinolone
- Smallpox vaccine live + Triamcinolone Contraindicated
- Triamcinolone + Zoster vaccine live Contraindicated
- Adenovirus types 4 and 7 live + Triamcinolone Major
- Aldesleukin + Triamcinolone Major
- Atazanavir + Triamcinolone Major
- Axicabtagene ciloleucel + Triamcinolone Major
Other interactions of Nelfinavir
- Alfuzosin + Nelfinavir Contraindicated
- Avanafil + Nelfinavir Contraindicated
- Dronedarone + Nelfinavir Contraindicated
- Eletriptan + Nelfinavir Contraindicated
- Ergotamine + Nelfinavir Contraindicated
- Flibanserin + Nelfinavir Contraindicated
Frequently asked questions
Can I take Nelfinavir with Triamcinolone?
MediHelp rates the interaction as major. Nelfinavir and Triamcinolone 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. Nelfinavir may increase triamcinolone exposure, raising the risk of Cushing syndrome and adrenal suppression with repeated or depot doses. Protease inhibitors have caused this with injected triamcinolone.
How serious is the interaction between Nelfinavir and Triamcinolone?
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 prolonged or repeated triamcinolone with nelfinavir and consider beclomethasone or prednisolone. If used, monitor for Cushingoid features and adrenal suppression.
What other medicines interact with Triamcinolone?
MediHelp also lists interactions of Triamcinolone with, for example, Smallpox vaccine live, Zoster vaccine live, Adenovirus types 4 and 7 live. The full list is on the Triamcinolone page.
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