Lutein is an antioxidant carotenoid that occurs in nature with zeaxanthin, a closely related carotenoid. Lutein and zeaxanthin concentrate in the eye's macula and lens, as well as in the skin, breast and cervical tissues.* Both lutein and zeaxanthin protect the macula from degradation normally associated with aging and oxidative stress.* The macula is responsible for focus and color differentiation. Lutein and zeaxanthin are found in dark green, leafy vegetables. While the average American intake of lutein is only 2 mg per day, other population groups consume up to 20 to 25 mg per day.* Jarrow Formulas Lutein is extracted from marigold petals. Each softgel contains 20 mg lutein (net yield) from lutein esters, which are naturally occurring, more stable and are well absorbed.