Now Foods Horse Chestnut 300 Mg Extract for relief from embarrassing veins Horse Chestnut extract is one of the most widely used natural treatments for varicose veins and chronic venous insufficiency. Several scientific studies have found this natural plant helps relieve pain and swelling of veins. This plant-based formula contains 20% aescin, also believed to help prevent spider and varicose veins from developing. Caution: Do not eat freshness packet. Keep in bottle. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.