Drug interactions
Heparin + Horse chestnut seed
Severity: Minor
Heparin 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 contains aescin and coumarin-type constituents that may have mild antithrombotic and platelet-inhibiting activity. Combined with heparin it could add to bleeding tendency, although clinical data are sparse.
What this interaction means in plain words
Heparin 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 antihemostatic effect from coumarin-like constituents; not firmly established.
What to do
Ask patients about herbal use and advise against horse chestnut during heparin therapy where possible. If it is used, monitor aPTT or anti-Xa and watch for bleeding.
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 Heparin
- Defibrotide + Heparin Contraindicated
- Heparin + Ketorolac Contraindicated
- Heparin + Oritavancin Contraindicated
- Acemetacin + Heparin Major
- Acetylsalicylic acid + Heparin Major
- Alteplase + Heparin Major
Frequently asked questions
Can I take Heparin with Horse chestnut seed?
MediHelp rates the interaction as minor. Heparin 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 contains aescin and coumarin-type constituents that may have mild antithrombotic and platelet-inhibiting activity. Combined with heparin it could add to bleeding tendency, although clinical data are sparse.
How serious is the interaction between Heparin 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 against horse chestnut during heparin therapy where possible. If it is used, monitor aPTT or anti-Xa and watch for bleeding.
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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