Dietary Supplement. Natural carotenoid. No artificial colors, flavors, or preservatives added. FloraGlo Lutein. The lutein in this product is extracted from marigolds and purified. Lutein is the most abundant carotenoid found in fruits and vegetables, and is especially concentrated in the macula of the eye. Twinlab Lutein is in a dry, water dispersed form. www.twinlab.com. A NSF GMP registered facility.