Food additives contribute to the overall appeal, convenience, nutritive value, and quality of foods. Food grade magnesium oxide is often used as a food additive for powdered food desiccants (drying agents), color retention, pH modification or as a magnesium mineral supplement or electrolyte. MgO is odorless and non-toxic, and meets requirements for food grade magnesium oxide. Magnesium oxide adds dietary value in the form of the mineral magnesium in dietary supplements. Magnesium is the fourth most common mineral in human bodies, with half of it found in bones as a strengthening component. Magnesium in blood and cells is vitally important for many functions such as cell metabolism, regulation of heart beat and blood pressure, energy production, and neuromuscular functioning