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Horse chestnut Side Effects

Applies to horse chestnut: oral capsule

Get emergency medical help if you have any of these signs of an allergic reaction while taking horse chestnut: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Although not all side effects are known, horse chestnut is thought to be possibly safe when taken for a short period of time.

Stop using horse chestnut and call your healthcare provider at once if you have:

  • severe skin redness, swelling, itching, or rash.

Common side effects may include:

  • upset stomach;

  • headache, dizziness; or

  • itching

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

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