Lifecell Calcium - Magnesium - Zinc - D3 - (Calcium Magnesium Zinc and Vitamin D3) Food Supplement Calcium- contributes to the protection of normal bones and teeth. Vitamin D and Calcium are necessary for the normal development and growth of children's bones. Calcium contributes to normal muscle function - normal energy-yielding metabolism and normal function of digestive enzymes. Calcium has a role in cell division and specialization processes. Magnesium contributes to the reduction of fatigue and exhaustion, electrolyte balance, normal energy metabolism, normal protein synthesis, preservation of normal bones, and maintenance of normal teeth. Additionally, magnesium has a role in cell division. Zinc - contributes to the maintenance of normal bones - maintenance of normal vision - DNA synthesis - protein synthesis - metabolism of fatty acids - protection of hair, skin and nails - normal function of the immune system. Vitamin D - necessary for the maintenance of normal teeth and normal bones. Vitamin D is important and necessary for normal bone development and growth in children. Vitamin D has a role in cell division. Vitamin D contributes to the normal function of the immune system - maintenance of normal muscle function - maintenance of normal teeth - maintenance of normal bones - normal blood calcium level - normal absorption/use of calcium and phosphorus. The minerals it contains are important for cell protection and healthy tooth, bone and skin structure.