21st Century's Horse Chestnut Seed Extract (Aesculus Hippocastanum) has been used for centuries to help support normal circulation in the legs.* 21st Century offers the highest quality ingredients produced to strict standards for support of your good health. No added sugar, salt, preservatives or artificial flavors. 100% vegetarian formula. *This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.