Drug interactions
Bivalirudin + Fondaparinux
Severity: Major
Bivalirudin 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
Combining a factor Xa inhibitor with a direct thrombin inhibitor produces additive anticoagulation and a higher chance of serious bleeding. It is generally unnecessary to use both.
What this interaction means in plain words
Bivalirudin 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.
Why it happens
Additive pharmacodynamic anticoagulation through inhibition of factor Xa (indirectly) and thrombin (directly).
What to do
Avoid overlapping use; during PCI follow guidance on the anticoagulant to use. If overlap is unavoidable, monitor for bleeding and coagulation parameters, including ACT or aPTT.
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 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 Bivalirudin with Fondaparinux?
MediHelp rates the interaction as major. Bivalirudin 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. Combining a factor Xa inhibitor with a direct thrombin inhibitor produces additive anticoagulation and a higher chance of serious bleeding. It is generally unnecessary to use both.
How serious is the interaction between Bivalirudin 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 use; during PCI follow guidance on the anticoagulant to use. If overlap is unavoidable, monitor for bleeding and coagulation parameters, including ACT or aPTT.
What other medicines interact with Fondaparinux?
MediHelp also lists interactions of Fondaparinux with, for example, Defibrotide, Ketorolac, Abciximab. The full list is on the Fondaparinux page.
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