Herbal supplement. 20% Acescin. Supports the integrity of the veins and capillaries. Formulated by Michael Tierra L.Ac, O.M.D. Almost unknown in America, horse chestnut is a staple of European herbalism. Horse chestnut is rich in saponins and flavones, which modern research has shown help support the normal integrity of the vascular system and connective tissue. Planetary Herbals Full Spectrum Horse Chestnut delivers a minimum of 20% aescin, the primary constituent in horse chestnut for assuring potency. Lifestyle Recommendations: To insure a healthy vascular system, increase dietary intake of flavonoid-rich foods such buckwheat, yams, onions, grapes and blueberries. Avoid excessive periods of standing of sitting, and exercise regularly. Other Planetary Formulas products for supporting the circulatory system include: Horse Chestnut Vein Strength and Hawthorn Heart. (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.)