From the Manufacturer:
Natural health enthusiasts have focused for years on beta-carotene, a carotenoid found naturally in carrots and other sources. Its antioxidant properties make it important to overall health. Many members of the carotenoid family have been shown to have a positive influence on health. For example, lycopene (responsible for the red color of tomatoes) may support prostate health; lutein (found in dark green vegetables) offers a variety of health benefits, particularly to the eyes; and zeaxanthin (also found in dark green veggies) may support immune function as an antioxidant.