Macuvite is a special food supplement containing the carotenoids lutein & zeaxanthin. These two carotenoids are found in the human macula & retina. The lutein used in this product is Flora GLO® lutein sourced from marigold flowers. The zeaxanthin in Macuvite comes from microalgae. One capsule contains 6 mg of lutein & 800 mcg of zeaxanthin.