Drug interactions
Heparin + Rivaroxaban
Severity: Major
Heparin and Rivaroxaban: 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
Both drugs impair coagulation, so combining them raises the risk of serious bleeding. Overlap is only intended when switching between agents, for example while transitioning from a heparin infusion to rivaroxaban.
What this interaction means in plain words
Heparin and Rivaroxaban 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.
Heparin belongs to Cardiovascular; Rivaroxaban belongs to Cardiovascular.
Why it happens
Additive anticoagulation: heparin potentiates antithrombin while rivaroxaban directly inhibits factor Xa.
What to do
Avoid concurrent use except during planned transitions, and give rivaroxaban at the time of heparin infusion discontinuation. Monitor for bleeding and check hemoglobin when overlap occurs.
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 Heparin
- Defibrotide + Heparin Contraindicated
- Heparin + Ketorolac Contraindicated
- Heparin + Oritavancin Contraindicated
- Acemetacin + Heparin Major
- Acetylsalicylic acid + Heparin Major
- Alteplase + Heparin Major
Other interactions of Rivaroxaban
- Defibrotide + Rivaroxaban Contraindicated
- Ketoconazole + Rivaroxaban Contraindicated
- Ketorolac + Rivaroxaban Contraindicated
- Abciximab + Rivaroxaban Major
- Acalabrutinib + Rivaroxaban Major
- Acetylsalicylic acid + Rivaroxaban Major
Frequently asked questions
Can I take Heparin with Rivaroxaban?
MediHelp rates the interaction as major. Heparin and Rivaroxaban 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. Both drugs impair coagulation, so combining them raises the risk of serious bleeding. Overlap is only intended when switching between agents, for example while transitioning from a heparin infusion to rivaroxaban.
How serious is the interaction between Heparin and Rivaroxaban?
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 concurrent use except during planned transitions, and give rivaroxaban at the time of heparin infusion discontinuation. Monitor for bleeding and check hemoglobin when overlap occurs.
What other medicines interact with Heparin?
MediHelp also lists interactions of Heparin with, for example, Defibrotide, Ketorolac, Oritavancin. The full list is on the Heparin page.
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