Fortifeye's Zinc Free Macular Defense is a doctor recommended, all natural multi-vitamin dietary supplement that’s a potent complex blend of vitamins, minerals, phytonutrients, whole foods, vegetable extract, and enzymes - combined into one convenient USP certified tablet for optimal results. Macular Defense has high bioavailability and is packed with our most powerful level of antioxidants - nutrients include vitamin B6, B12, C, D, all 8 forms of vitamin E, biotin, and more.