Magnesium is an essential mineral and cofactor required for hundreds of chemical reactions in the body. Magnesium is a required cofactor for an estimated 300 enzymes in the body. These reactions include those that involve cellular energy production, DNA synthesis, nerve impulse conduction and muscle function. Magnesium Citrate is more easily digested and better absorbed than other forms of magnesium. Magnesium can support energy production, muscle relaxation, glucose metabolism and regulation of calcium balance.