180 Multivitamin & Food supplement tablets Vitamins B2, b12, C, niacin, pantothenic acid and iron contribute to normal energy-yielding metabolism and to the reduction of tiredness anf fatigue. Vitamins A, D, C B6 and B12 are needed for the normal function of the immune system, Vitamin A contributes to the maintenance of normal vision. Vitamin D contributes to the maintenance of normal teeth, bones and muscle function. Iron aids normal formation of red blood cells and haemoglobin.