Drug interactions
Garlic + Horse chestnut seed
Severity: Moderate
Garlic and Horse chestnut seed: moderate 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 compounds that may affect coagulation, and garlic has antiplatelet activity. Combined use could theoretically increase bleeding risk.
What this interaction means in plain words
Garlic and Horse chestnut seed can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Possible additive effects on coagulation and platelet function; the evidence is mostly theoretical.
What to do
Avoid combining with anticoagulants or antiplatelets, and stop before surgery. Monitor for bleeding and INR if on warfarin.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Garlic
- Garlic + Saquinavir Major
- Aceclofenac + Garlic Moderate
- Acemetacin + Garlic Moderate
- Aescin + Garlic Moderate
- Alteplase + Garlic Moderate
- Argatroban + Garlic Moderate
Frequently asked questions
Can I take Garlic with Horse chestnut seed?
MediHelp rates the interaction as moderate. Garlic and Horse chestnut seed can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Horse chestnut seed extract contains aescin and coumarin-type compounds that may affect coagulation, and garlic has antiplatelet activity. Combined use could theoretically increase bleeding risk.
How serious is the interaction between Garlic and Horse chestnut seed?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid combining with anticoagulants or antiplatelets, and stop before surgery. Monitor for bleeding and INR if on warfarin.
What other medicines interact with Garlic?
MediHelp also lists interactions of Garlic with, for example, Saquinavir, Aceclofenac, Acemetacin. The full list is on the Garlic page.
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