Drug interactions
Dabigatran etexilate + Fondaparinux
Severity: Major
Dabigatran etexilate and Fondaparinux: 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
Two anticoagulants acting at different points of the coagulation cascade together raise the risk of clinically significant bleeding. Concurrent use offers no planned benefit outside transitions.
What this interaction means in plain words
Dabigatran etexilate and Fondaparinux 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; Fondaparinux belongs to Cardiovascular.
Why it happens
Additive anticoagulation through thrombin inhibition (dabigatran) and indirect factor Xa inhibition (fondaparinux).
What to do
Avoid overlapping therapy except when transitioning, timing the first dose of the new drug at the time the next dose of the old one would be due. Monitor for bleeding and renal function.
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 Fondaparinux
- Defibrotide + Fondaparinux Contraindicated
- Fondaparinux + Ketorolac Contraindicated
- Abciximab + Fondaparinux Major
- Aceclofenac + Fondaparinux Major
- Acetylsalicylic acid + Fondaparinux Major
- Alteplase + Fondaparinux Major
Frequently asked questions
Can I take Dabigatran etexilate with Fondaparinux?
MediHelp rates the interaction as major. Dabigatran etexilate and Fondaparinux 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. Two anticoagulants acting at different points of the coagulation cascade together raise the risk of clinically significant bleeding. Concurrent use offers no planned benefit outside transitions.
How serious is the interaction between Dabigatran etexilate and Fondaparinux?
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 overlapping therapy except when transitioning, timing the first dose of the new drug at the time the next dose of the old one would be due. Monitor for bleeding and renal function.
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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