Twinlab OcuGuard Plus, 60 Capsules OcuGuard Plus with Lutein, Zeaxanthin and Vitamin D3 (cholecalciferol) is an advanced vitamin and antioxidant nutritional supplement specifically formulated to support healthy vision and promote vision clarity. How It Works: Twinlab® OcuGuard® Plus with lutein is an advanced vitamin and antioxidant supplement specifically formulated to support eye health.* FloraGLO® lutein, derived from the marigold flower, is a high quality lutein, and unlike other lutein esters, can be readily absorbed by the body.* Vitamins A, C and E work together to help maintain eye health and absorb free radicals, while zeaxanthin and vitamin D have been shown to help support against the progression of age-related conditions.*Suggested Use: Take two capsules twice daily (preferably with morning and evening meals), or as directed by a health care professional.