Magnesium deficiency is caused by severe soil depletion, use of stimulants, poor diet and stress*. Magnesium Citrate is one of the most absorbable forms of Magnesium that contributes to the reduction of tiredness and fatigue*, normal muscle and nervous system function*, healthy bones*, teeth*, normal energy yielding metabolism and protein synthesis*. Magnesium also encourages relaxation and restful sleep*. Increased intake of Magnesium is also recommended for those who are on Vitamin D supplements.supplements.