Zinc contributes to normal cognitive function, macronutrient metabolism, fertility and reproduction. Zinc is also important for the maintenance of normal vision, hair, skin and nail health. Mix with water or your favourite juice to make an easy-to-take health supplement. Calcium and magnesium are needed for the maintenance of normal bones and teeth. Calcium and magnesium contribute to normal muscle function and neurotransmission. Magnesium can also help reduce tiredness and fatigue and contribute to psychological function.