Magnesium is a hugely important mineral in the body, contributing to the reduction of tiredness and fatigue, electrolyte balance, normal nervous, psychological and muscle function, normal bones, teeth, electrolyte balance and energy yielding metabolism. Lindens Magnesium Tablets each contain 500mg of magnesium oxide (MgO) yielding 300mg elemental magnesium in an easy swallow, convenient tablet. Free From: dairy, soya, sugar & gluten. Suitable for vegans and vegetarians.