Nature's Way Damiana Leaves - Traditionally used as a natural treatment for pulmonary disorders such as asthma, bronchitis, and emphysema, Damiana has gained acceptance as a sexual rejuvenator in both men and women. Its ability to help strengthen the ovum, and increase male sperm count, as well as to strengthen the overall reproductive system is well documented. Damiana has also shown good results in controlling and reducing symptoms and discomforts associated with PMS and menopause. Damiana taken in higher quantities may cause loosening of the stool.