Drug interactions
Fondaparinux + Horse chestnut seed
Severity: Minor
Fondaparinux and Horse chestnut seed: minor 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
Horse chestnut seed extract (aescin) has been reported to have mild antiplatelet or anticoagulant-like activity. Combined with fondaparinux it could add to bleeding risk, although clinical data are sparse.
What this interaction means in plain words
Fondaparinux and Horse chestnut seed have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Possible additive effects on hemostasis; the herbal effect is poorly characterized.
What to do
Ask patients about herbal use and advise avoiding horse chestnut products during fondaparinux therapy. Monitor for bleeding if it is used.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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 Fondaparinux with Horse chestnut seed?
MediHelp rates the interaction as minor. Fondaparinux and Horse chestnut seed have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Horse chestnut seed extract (aescin) has been reported to have mild antiplatelet or anticoagulant-like activity. Combined with fondaparinux it could add to bleeding risk, although clinical data are sparse.
How serious is the interaction between Fondaparinux and Horse chestnut seed?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Ask patients about herbal use and advise avoiding horse chestnut products during fondaparinux therapy. Monitor for bleeding if it is used.
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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