Hesperidin is a type of antioxidant plant chemical found in citrus fruits called a bioflavonoid. This product is a Citrus aurantium extract standardized to contain 90% hesperidin. Hesperidin (Citrus aurantium) extract is a bioflavonoid and antioxidant that may support circulatory health and heart health and fortify the immune system.** 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.