Three of these key nutrients known to support bone health are Calcium, Magnesium and Vitamin D3, each playing a unique role. For this reason, a tablet with Calcium & Magnesium with Vitamin D3 combined is a great choice. Calcium and Vitamin D both contribute to the maintenance of normal bones and teeth, and these two nutrients work in synergy, as Vitamin D helps with normal absorption and utilisation of Calcium. Magnesium helps to maintain normal bones and teeth, as well as contributing to normal muscle function and a reduction in tiredness & fatigue.