Holland & Barrett Calcium Magnesium Vitamin D and Zinc tablets contain a combination of three essential minerals. Calcium helps maintain normal bones and contributes towards normal muscle function, Zinc is key to brain health and contributes to normal cognitive function and Magnesium contributes to normal functioning of the nervous system. Magnesium, Calcium, and Zinc are important for multiple bodily functions, so taking a supplement ensures you get what your body needs.Contributes To the Maintenance of Normal Bones and Muscle FunctionReduces Tiredness and FatigueSuitable For VegetariansWhat Are the Benefits of This Supplement?Calcium is needed for the maintenance of normal bones. Magnesium also plays a key role in the structural development of our bones and teeth, and zinc helps to maintain healthy bones.Magnesium and Calcium work together when it comes to muscle contraction and relaxation – calcium triggers muscle contractions and then magnesium works as a natural blocker to help the cells relax. The body needs magnesium to make a molecule called adenosine triphosate (ATP) in your cells, which is responsible for delivering energy to all the cells in your body. Calcium also contributes to normal muscle function. Magnesium contributes to a reduction of tiredness and fatigue and contributes to normal energy-yielding metabolism.Zinc helps to keep you feeling healthy inside and out. The mineral helps to support the growth of healthy hair, skin, and nails; contributes to eye health; maintenance of normal vision and is also important for the normal functioning of the immune system and fertility.