Magnesium Malate Powder by Seeking Health provides 500 mg of magnesium (as dimagnesium malate) per serving. Magnesium is an abundant mineral naturally present in the body that acts as a cofactor in hundreds of enzymatic processes and systems. It helps to regulate biochemical reactions in the body, including protein synthesis, muscle and nerve function, and healthy blood pressure. It may help support healthy muscle relaxation by inhibiting calcium influx and smooth muscle contraction.