Drug interactions
Triamcinolone acetonide extended-release injectable + Warfarin
Severity: Minor
Triamcinolone acetonide extended-release injectable and Warfarin: 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
Corticosteroids can alter the INR in patients on warfarin, usually raising it, and also increase gastrointestinal bleeding risk. An intra-articular depot injection gives lower systemic exposure, so the effect is likely small. Intramuscular injection of a corticosteroid also carries a risk of hematoma in anticoagulated patients.
What this interaction means in plain words
Triamcinolone acetonide extended-release injectable and Warfarin 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
Corticosteroids may modify warfarin response through unclear effects on coagulation and mucosal protection; systemic exposure from the intra-articular depot is low.
What to do
Check INR after the injection if the patient is unstable or at high bleeding risk. Use care with injection technique and watch for local bleeding.
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?
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Other interactions of Warfarin
- Defibrotide + Warfarin Contraindicated
- Ketorolac + Warfarin Contraindicated
- Abciximab + Warfarin Major
- Acetylsalicylic acid + Warfarin Major
- Adagrasib + Warfarin Major
- Amiodarone + Warfarin Major
Frequently asked questions
Can I take Triamcinolone acetonide extended-release injectable with Warfarin?
MediHelp rates the interaction as minor. Triamcinolone acetonide extended-release injectable and Warfarin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Corticosteroids can alter the INR in patients on warfarin, usually raising it, and also increase gastrointestinal bleeding risk. An intra-articular depot injection gives lower systemic exposure, so the effect is likely small. Intramuscular injection of a corticosteroid also carries a risk of hematoma in anticoagulated patients.
How serious is the interaction between Triamcinolone acetonide extended-release injectable and Warfarin?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check INR after the injection if the patient is unstable or at high bleeding risk. Use care with injection technique and watch for local bleeding.
What other medicines interact with Warfarin?
MediHelp also lists interactions of Warfarin with, for example, Defibrotide, Ketorolac, Abciximab. The full list is on the Warfarin page.
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