Drug interactions
Fondaparinux + Indomethacin
Severity: Major
Fondaparinux and Indomethacin: major interaction.
Last updated Sources: US FDA label
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
Indomethacin's antiplatelet effect and gastric mucosal toxicity increase the risk of bleeding with fondaparinux. Major hemorrhage can occur, and fondaparinux has no specific reversal agent.
What this interaction means in plain words
Fondaparinux and Indomethacin 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.
Fondaparinux belongs to Cardiovascular; Indomethacin belongs to Musculoskeletal.
Why it happens
Additive impairment of hemostasis from NSAID platelet inhibition and mucosal injury plus indirect factor Xa inhibition.
What to do
Avoid NSAIDs during fondaparinux therapy where possible; if unavoidable, monitor closely for bleeding and hemoglobin and consider gastroprotection.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Fondaparinux and Indomethacin, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
References
Other interactions of Indomethacin
- Indomethacin + Ketorolac Contraindicated
- Indomethacin + Ketorolac intranasal Contraindicated
- Aceclofenac + Indomethacin Major
- Acemetacin + Indomethacin Major
- Acetylsalicylic acid + Indomethacin Major
- Alteplase + Indomethacin 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 Fondaparinux with Indomethacin?
MediHelp rates the interaction as major. Fondaparinux and Indomethacin 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. Indomethacin's antiplatelet effect and gastric mucosal toxicity increase the risk of bleeding with fondaparinux. Major hemorrhage can occur, and fondaparinux has no specific reversal agent.
How serious is the interaction between Fondaparinux and Indomethacin?
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 NSAIDs during fondaparinux therapy where possible; if unavoidable, monitor closely for bleeding and hemoglobin and consider gastroprotection.
What other medicines interact with Indomethacin?
MediHelp also lists interactions of Indomethacin with, for example, Ketorolac, Ketorolac intranasal, Aceclofenac. The full list is on the Indomethacin page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
