Magnesium oxide

Magnesium oxide is a mineral compound obtained by calcining magnesite or magnesium hydroxide. It is notable for its very high elemental magnesium content, exceeding 60% of its mass, making it the most concentrated form among all available magnesium forms. However, its water solubility is limited, resulting in moderate bioavailability compared to organic forms. Magnesium is an essential mineral involved in more than 300 enzymatic reactions in the body. It contributes to normal energy metabolism, nervous system function, muscle contraction, and the maintenance of normal bones. Insufficient magnesium intake is common in Western populations, largely due to soil depletion and modern dietary habits. Supplementation with magnesium oxide can be a practical option when the goal is to achieve high elemental doses in compact formulas. It is often combined with other, more bioavailable forms of magnesium to optimise overall absorption.