Pro-Optic Traditional Formula (Age Related Eye Disease Study 2 Based Formula) Each Capsule Contains Lutein 10mg, Zeaxanthin 2mg , Zinc 20mg, Copper 1.2mg, Vitamin C 500mg and Vitamin E 134mg. Pro-Optic contains Zinc Citrate – a more tolerable and more easily absorbed form of Zinc. With increased absorption, less is needed to reach therapeutic levels. Throughout the ARED studies, patients were given Zinc Oxide. Pro-Optic contains Natural Vitamin E. Throughout the duration of both ARED studies, patients were given synthetic Vitamin E (a less expensive, petroleum based version). We use Natural Vitamin E because it is a safer and more effective form of the vitamin and less is needed to reach therapeutic levels obtained throughout the AREDS 2 study. Only One Capsule Per Day.