Drug interactions
Dabigatran etexilate + Warfarin
Severity: Major
Dabigatran etexilate and Warfarin: 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
Taking both anticoagulants together markedly increases the risk of bleeding and offers no additional benefit in standard practice. Dabigatran can also modestly raise the INR, complicating warfarin monitoring.
What this interaction means in plain words
Dabigatran etexilate and Warfarin 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.
Dabigatran etexilate belongs to Cardiovascular; Warfarin belongs to Cardiovascular.
Why it happens
Additive anticoagulation from thrombin inhibition and reduced synthesis of vitamin K-dependent clotting factors.
What to do
Avoid combined use; when switching from warfarin, start dabigatran once INR falls below 2.0, and when switching to warfarin, overlap per labeling based on creatinine clearance. Monitor INR and bleeding.
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 Dabigatran etexilate
- Dabigatran etexilate + Defibrotide Contraindicated
- Dabigatran etexilate + Ketorolac Contraindicated
- Dabigatran etexilate + Mifepristone Contraindicated
- Abciximab + Dabigatran etexilate Major
- Alteplase + Dabigatran etexilate Major
- Amiodarone + Dabigatran etexilate Major
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 Dabigatran etexilate with Warfarin?
MediHelp rates the interaction as major. Dabigatran etexilate and Warfarin 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. Taking both anticoagulants together markedly increases the risk of bleeding and offers no additional benefit in standard practice. Dabigatran can also modestly raise the INR, complicating warfarin monitoring.
How serious is the interaction between Dabigatran etexilate and Warfarin?
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 combined use; when switching from warfarin, start dabigatran once INR falls below 2.0, and when switching to warfarin, overlap per labeling based on creatinine clearance. Monitor INR and bleeding.
What other medicines interact with Dabigatran etexilate?
MediHelp also lists interactions of Dabigatran etexilate with, for example, Defibrotide, Ketorolac, Mifepristone. The full list is on the Dabigatran etexilate page.
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