Drug interactions
Ritonavir + Triamcinolone
Severity: Major
Ritonavir 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
Ritonavir is a potent CYP3A4 inhibitor and markedly raises triamcinolone exposure, including after injected or intra-articular doses. Cases of iatrogenic Cushing syndrome and adrenal suppression have been reported.
What this interaction means in plain words
Ritonavir 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.
Ritonavir belongs to Anti Virals; Triamcinolone belongs to Endocrine.
Why it happens
Potent CYP3A4 inhibition by ritonavir greatly reduces triamcinolone metabolism.
What to do
Avoid triamcinolone with ritonavir or cobicistat-boosted regimens where possible, and use an alternative such as beclomethasone or prednisolone. If it must be used, give the lowest dose and monitor for Cushingoid effects 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 Ritonavir
- Alfuzosin + Ritonavir Contraindicated
- Amiodarone + Ritonavir Contraindicated
- Avanafil + Ritonavir Contraindicated
- Colchicine + Ritonavir Contraindicated
- Dronedarone + Ritonavir Contraindicated
- Eletriptan + Ritonavir Contraindicated
Frequently asked questions
Can I take Ritonavir with Triamcinolone?
MediHelp rates the interaction as major. Ritonavir 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. Ritonavir is a potent CYP3A4 inhibitor and markedly raises triamcinolone exposure, including after injected or intra-articular doses. Cases of iatrogenic Cushing syndrome and adrenal suppression have been reported.
How serious is the interaction between Ritonavir 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 triamcinolone with ritonavir or cobicistat-boosted regimens where possible, and use an alternative such as beclomethasone or prednisolone. If it must be used, give the lowest dose and monitor for Cushingoid effects 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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