Drug interactions
Fondaparinux + Ketorolac intranasal
Severity: Major
Fondaparinux and Ketorolac intranasal: 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
Ketorolac inhibits platelet function and can cause gastrointestinal bleeding, even by the intranasal route. With fondaparinux the bleeding risk rises, and ketorolac labeling lists bleeding risk as a concern with anticoagulants.
What this interaction means in plain words
Fondaparinux and Ketorolac intranasal 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 hemostatic impairment: NSAID-induced platelet inhibition and mucosal injury plus factor Xa inhibition by fondaparinux.
What to do
Avoid the combination where possible and use a non-NSAID analgesic such as paracetamol. If it is unavoidable, keep the course short and monitor for bleeding and hemoglobin changes.
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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References
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 Ketorolac intranasal?
MediHelp rates the interaction as major. Fondaparinux and Ketorolac intranasal 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. Ketorolac inhibits platelet function and can cause gastrointestinal bleeding, even by the intranasal route. With fondaparinux the bleeding risk rises, and ketorolac labeling lists bleeding risk as a concern with anticoagulants.
How serious is the interaction between Fondaparinux and Ketorolac intranasal?
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 the combination where possible and use a non-NSAID analgesic such as paracetamol. If it is unavoidable, keep the course short and monitor for bleeding and hemoglobin changes.
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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