Vitamin C helps to maintain the normal function of the immune system, it reduces tiredness and fatigue.
Calcium and vitamin D help the absorption of each other, contribute the normal function of nervous system, muscles and the maintenance of bones and teeth.
Magnesium and vitamin B6 contribute to the maintenance of nervous system, take part in energy-producing metabolism and in the operation of psychological functions.
Vitamin D and calcium help the maintenance of bones, teeth and muscles, take part in operation of immune system.