Androstene: This unique patent-pending formula contains 100mg of Androstenedione, 10mg of Zinc and 50mg of Green Tea. The addition of Green Tea and Zinc helps reduce the possible conversion of excess Androstenedione into estrogen. Androstenedione is the natural precursor for testosterone. Scientific studies have found that vigorous weight lifting may lead to a deficiency of Androstenedione in young men, especially when a plateau effect is reached. (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).