Drug interactions
Triamcinolone acetonide injectable + Warfarin
Severity: Moderate
Triamcinolone acetonide injectable and Warfarin: 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
Systemic corticosteroids may increase the INR in patients taking warfarin and add to gastrointestinal bleeding risk. Injected triamcinolone gives systemic exposure that varies with route and dose, so the effect is usually modest. Intramuscular injection also carries a risk of hematoma in anticoagulated patients.
What this interaction means in plain words
Triamcinolone acetonide injectable and Warfarin 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
Corticosteroids may modify warfarin response through unclear effects on coagulation and mucosal protection.
What to do
Check INR within a few days after a systemic dose, particularly with repeated or high doses, and adjust warfarin as needed. Watch for gastrointestinal and injection-site bleeding.
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 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 injectable with Warfarin?
MediHelp rates the interaction as moderate. Triamcinolone acetonide injectable and Warfarin 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. Systemic corticosteroids may increase the INR in patients taking warfarin and add to gastrointestinal bleeding risk. Injected triamcinolone gives systemic exposure that varies with route and dose, so the effect is usually modest. Intramuscular injection also carries a risk of hematoma in anticoagulated patients.
How serious is the interaction between Triamcinolone acetonide injectable and Warfarin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check INR within a few days after a systemic dose, particularly with repeated or high doses, and adjust warfarin as needed. Watch for gastrointestinal and injection-site 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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