* Science-Based Nutrition * Dietary Supplement * Helps Maintain Healthy Visual Function and Neutralize Free Radicals * Vegan * Non-GMO / Gluten Free / Soy Free / Vegan * Helps Maintain Healthy Vision * Helps Neutralize Free Radicals Lutein with OptiLut supplies bioavailable lutein and zeaxanthin esters from Marigold Extract, a highly bioavailable, natural source of these two carotenoid nutrients and the most abundant source in nature. Lutein and zeaxanthin are two of the major carotenoids found in human blood, and are highly concentrated in the retina of the human eye. Lutein and zeaxanthin are also potent free radical neutralizers that likely contribute to the body"s spectrum of antioxidant defenses.