Lutein is the active carotenoid in this potent, natural source antioxidant. It is naturally derived from marigold flowers and contains a normal blend of carotenoids including: Zeaxanthin and Cryptoxanthin. Lutein is an antioxidant in the carotenoid family (a group of naturally occurring fat-soluble pigments found in plants). Lutein is the primary carotenoid present in the central area of the retina called the macula.