Overview

Horse chestnut is a tree. Its seed, bark, flower, and leaves are used to make medicine. Horse chestnut contains significant amounts of a poison called esculin and can cause death if eaten raw.

Be careful not to confuse Aesculus hippocastanum (Horse chestnut) with Aesculus californica (California buckeye) or Aesculus glabra (Ohio buckeye). Some people call any of these plants horse chestnut. This information applies to Aesculus hippocastanum only.

Horse chestnut seed extracts are most commonly taken by mouth to treat poor circulation that can cause the legs to swell (chronic venous insufficiency or CVI). There is currently no good scientific evidence to support the use of horse chestnut for other conditions.

How does it work ?

Horse chestnut contains a substance that thins the blood. It also makes it harder for fluid to leak out of veins and capillaries and weakly promotes fluid loss through the urine to help prevent water retention (edema).

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