Doctor's Best Comprehensive Prostate Formula contains potent levels of synergistic herbs, nutrients and phytochemicals that have been scientifically researched to support the health and wellness of the prostate gland. This formula incorporates premier herbal extracts of Saw palmetto, African Pygeum bark and Nettle root, CardioAid plant sterols, and SelenoExcell High Selenium Yeast, a superior form of the mineral selenium, nutrients that have shown documented benefits for prostate health.