Preservision AREDS 2 Formula Chewables is a clinically proven eye vitamin supplement that contains the exact levels of six nutrients recommended by the National Eye Institute (NEI) to help reduce the risk of progression of moderate-to-advanced age-related macular degeneration (AMD). AMD is a leading cause of vision loss in adults over the age of 50. It occurs when the macula, the central part of the retina that is responsible for sharp central vision, deteriorates. Preservision AREDS 2 Formula Chewables contains the following six nutrients: Vitamin C: An antioxidant that helps protect the macula from damage caused by free radicals. Vitamin E: Another antioxidant that helps protect the macula from damage. Zinc: An essential mineral that helps maintain the health of the macula and other parts of the eye. Copper: An essential mineral that helps the body absorb zinc. Lutein and zeaxanthin: Two carotenoids that are found naturally in the macula and help protect it from damage. Preservision AREDS 2 Formula Chewables is available in a convenient and great-tasting chewable tablet form. It is recommended that adults take two chewable tablets daily with food, one in the morning and one in the evenin