Magnesium and Potassium Aspartates have been found effective for relief of fatigue attributed to a variety of origins. Magnesium is not a trace mineral but a major entity in the body. Most of it is in the bones and intracellular fluids. Magnesium is absolutely essential for life. It is necessary for every major biologic process including the metabolism of glucose, production of cellular energy and the synthesis of nucleic acids and protein.*