Drug interactions
Posaconazole + Triamcinolone acetonide injectable
Severity: Moderate
Posaconazole and Triamcinolone acetonide injectable: moderate 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
Posaconazole can increase systemic triamcinolone exposure after injection, as shown for other strong CYP3A4 inhibitors. This can lead to Cushing's syndrome and adrenal suppression, even from intra-articular or epidural injections.
What this interaction means in plain words
Posaconazole and Triamcinolone acetonide injectable can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Strong CYP3A4 inhibition reduces the metabolic clearance of triamcinolone.
What to do
Consider an alternative corticosteroid less dependent on CYP3A4, such as dexamethasone at a low dose with caution, or use the lowest triamcinolone dose. Monitor for Cushingoid features and adrenal suppression.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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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 Posaconazole with Triamcinolone acetonide injectable?
MediHelp rates the interaction as moderate. Posaconazole and Triamcinolone acetonide injectable can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Posaconazole can increase systemic triamcinolone exposure after injection, as shown for other strong CYP3A4 inhibitors. This can lead to Cushing's syndrome and adrenal suppression, even from intra-articular or epidural injections.
How serious is the interaction between Posaconazole and Triamcinolone acetonide injectable?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Consider an alternative corticosteroid less dependent on CYP3A4, such as dexamethasone at a low dose with caution, or use the lowest triamcinolone dose. Monitor for Cushingoid features and adrenal suppression.
What other medicines interact with Posaconazole?
MediHelp also lists interactions of Posaconazole with, for example, Artemether, Avanafil, Cobimetinib. The full list is on the Posaconazole page.
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