A to Z Active Effervescent Tablets is a comprehensive formula that is cleverly balanced by our nutritionists to keep you feeling 100%. It contains the essential Vitamins and Minerals that are recommended on a daily basis. Vitamin A contributes to normal iron metabolism and the maintenance of normal mucous membranes, skin, and vision. It also contributes to the normal function of the immune system and normal energy-yielding metabolism. Vitamin B-complex has a unique chemical structure and serves a unique function within the body. While vitamins B1, B2, B3, and biotin contribute to the production of energy, vitamin B6 is essential for normal metabolic functions. Vitamin C contributes to the normal function of the immune system and the protection of cells from oxidative stress. It also contributes to normal collagen formation, a tissue needed for healthy bones, teeth, gums, and blood vessels. Vitamin D contributes to normal blood calcium levels and the maintenance of normal bones and muscle function. Vitamin E is a potent antioxidant and contributes to the protection of cells from oxidative stress. Minerals such as Calcium and Magnesium contribute to the maintenance of strong bones and teeth, whilst also supporting muscle function and neurotransmission. Zinc contributes to normal immune function, DNA synthesis, and cell division. Copper is also used to support the immune system and maintain connective tissue health.