ICAPS Eye Vitamin & Mineral Supplement AREDS formula contains the same antioxidants & zinc levels used in National Eye Institute's Age-Related Eye Disease Study (AREDS). AREDS is a ground-breaking 10-year clinical study that proved the benefit of these high-potency antioxidant & zinc ingredients in certain patients risk. It is important to note that the high-potency of Vitamin C, Vitamin A, Vitamin E, & Zinc ingredient levels found in ICAPs AREDS formula generally can be obtained only by supplementation & not through diet alone.