There are a number of possible horse chestnut side effects that may occur when this herb is used, and some of these side effects can be dangerous or even fatal. For many people the numerous horse chestnut benefits will be achieved without experiencing any side effects at all, but others may experience problems ranging from mild to severe and deadly. Mild symptoms can include nausea and an upset stomach, as well as a headache and mild dizziness. These horse chestnut side effects will generally go away once the herb use stops, and these symptoms may be bothersome but they are rarely severe enough to require medical treatment.
Horse chestnut is commonly used in varicose vein treatment, but some of the side effects caused by this herb may require emergency attention. Hypoglycemia, also called low blood sugar, is one of the serious
horse chestnut side effects that can lead to death if left untreated. Diabetics and individuals who have a problem regulating blood sugar levels should avoid this supplement completely. A horse chestnut cream may be a better choice for varicose veins, because the topical form may cause fewer side effects and symptoms than the oral form of the herb which is ingested.
Another one of the serious horse chestnut side effects is an allergic reaction. While this is rare, the complications can be serious, and immediate medical attention should be sought. These side effects can occur with the use of horse chestnut seed extract or any other form of the herb. If any symptoms occur, it is advised that the horse chestnut use is stopped immediately. If serious symptoms occur then a physician should be consulted as soon as possible, because organ damage or even death can occur if treatment is not received. This herb can offer benefits, but there are also some risks involved as well, so caution needs to be used with this remedy.