The seeds, leaves, bark and flowers of this tree, which is native to Europe, have been used for centuries in herbal medicine.
Scientific evidence: Several studies now indicate that horse chestnut seed extract may be helpful for venous insufficiency, decreasing leg pain, fatigue, itchiness and swelling.
Caution: Horse chestnut may lower blood sugar and interfere with diabetes medication.
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What is it?
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.
Horse chestnut seed and leaf are used for treating varicose veins, hemorrhoids, and swollen veins (phlebitis).
Horse chestnut seed is used for diarrhea, fever, and enlarged prostate.
Horse chestnut seeds can be processed so that the active chemicals are separated out and concentrated. The resulting “extract” is used for treating a blood circulation problem called chronic venous insufficiency.
Horse chestnut leaf is used for eczema, menstrual pain, soft tissue swelling from bone fracture and sprains, cough, arthritis, and joint pain.
Horse chestnut branch bark is used for malaria and dysentery.
Some people apply horse chestnut branch bark to the skin for lupus and skin ulcers.
How effective is it?
The effectiveness ratings for HORSE CHESTNUT are as follows:
- Varicose veins and other circulatory problems (chronic venous insufficiency). Taking horse chestnut seed extract can reduce some symptoms of poor blood circulation, such as varicose veins, pain, tiredness, swelling in the legs, itching, and water retention.
Insufficient evidence to rate effectiveness for...
- Hemorrhoids.
- Diarrhea.
- Fever.
- Cough.
- Enlarged prostate.
- Eczema.
- Menstrual pain.
- Soft tissue swelling from bone fracture and sprains, arthritis, joint pain, and other conditions.
- Other conditions.
How does it work?
Are there safety concerns?
Pollen from the horse chestnut flower can cause allergic reactions. Rectal (suppository) use of horse chestnut may cause inflammation and itching in the anal area.
Raw horse chestnut seed, bark, flower, and leaf are UNSAFE and can even cause death when taken by mouth. Signs of poisoning include stomach upset, kidney problems, muscle twitching, weakness, loss of coordination, enlarged eye pupils, vomiting, diarrhea, depression, paralysis, and stupor. Accidental ingestion of horse chestnut requires prompt medical attention. Children have been poisoned by drinking a tea made from the leaves and twigs or eating seeds.
Are there interactions with medications?
Moderate
Some medications used for diabetes include glimepiride (Amaryl), glyburide (DiaBeta, Glynase PresTab, Micronase), insulin, pioglitazone (Actos), rosiglitazone (Avandia), chlorpropamide (Diabinese), glipizide (Glucotrol), tolbutamide (Orinase), and others.
Some medications that slow blood clotting include aspirin, clopidogrel (Plavix), diclofenac (Voltaren, Cataflam, others), ibuprofen (Advil, Motrin, others), naproxen (Anaprox, Naprosyn, others), dalteparin (Fragmin), enoxaparin (Lovenox), heparin, warfarin (Coumadin), and others.
Are there interactions with herbs and supplements?
BY MOUTH:
- For poor blood circulation (chronic venous insufficiency): 300 mg of horse chestnut seed extract containing 50 mg of the active ingredient, aescin, twice daily.