Natures aid calcium magnesium vit d3 90 tabletcalcium magnesium and vitamin d3 calcium and magnesium are required for strong bones and teeth and play a vital role in nerve and muscle function including normal heartbeat magnesium is required for the effective utilisation of calcium vitamin d3 helps to regulate calcium levels in the body and is particularly important in skeletal development and bone mineralisation recommended intake take 2 tablets per day with food pack size 90 tablets