Sanatogen® A-Z Complete Multivitamin is a source of 23 essential vitamins and minerals, including antioxidants, specially designed to help maintain long-term health and wellbeing when taken daily. Immunity - Vitamins A, C, D, Iron & Zinc help support your immune system, your body's natural defender Energy Release - Vitamins B2 & B12 help your body release stored energy & help reduce tiredness & fatigue Bones & Teeth - Vitamin D & Calcium help to maintain healthy bones & teeth Heart - Vitamin B1 contributes to the normal function of your heart Blood - Folic Acid contributes to normal blood formation Skin & Vision - Vitamins A, B2 & Zinc contribute to the maintenance of normal skin & vision Antioxidant - Vitamins C, E & Copper are antioxidants that contribute to the protection of cells from oxidative stress