Drug interactions
Efavirenz + Triamcinolone acetonide injectable
Severity: Minor
Efavirenz and Triamcinolone acetonide injectable: minor 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
Efavirenz induces CYP3A4, which metabolizes triamcinolone, so corticosteroid exposure and effect may be reduced. The effect after a single depot injection is likely modest and clinically variable.
What this interaction means in plain words
Efavirenz and Triamcinolone acetonide injectable have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Efavirenz induction of CYP3A4 increases triamcinolone clearance.
What to do
Monitor for reduced anti-inflammatory response and consider a dose or interval adjustment if efficacy is lacking.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Efavirenz and Triamcinolone acetonide injectable, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Efavirenz
- Cobimetinib + Efavirenz Contraindicated
- Dienogest / estradiol valerate + Efavirenz Contraindicated
- Dihydroergotamine intranasal + Efavirenz Contraindicated
- Dihydroergotamine + Efavirenz Contraindicated
- Doravirine + Efavirenz Contraindicated
- Efavirenz + Elbasvir / grazoprevir Contraindicated
Frequently asked questions
Can I take Efavirenz with Triamcinolone acetonide injectable?
MediHelp rates the interaction as minor. Efavirenz and Triamcinolone acetonide injectable have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Efavirenz induces CYP3A4, which metabolizes triamcinolone, so corticosteroid exposure and effect may be reduced. The effect after a single depot injection is likely modest and clinically variable.
How serious is the interaction between Efavirenz and Triamcinolone acetonide injectable?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for reduced anti-inflammatory response and consider a dose or interval adjustment if efficacy is lacking.
What other medicines interact with Efavirenz?
MediHelp also lists interactions of Efavirenz with, for example, Cobimetinib, Dienogest / estradiol valerate, Dihydroergotamine intranasal. The full list is on the Efavirenz page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
