Magnesium is a mineral that is critical for energy production and metabolism, muscle contraction, nerve impulse transmission, and bone mineralization.* It is a required cofactor for an estimated 300 enzymes.* Among the processes that require magnesium are fat and protein production, as well as glucose metabolism.* NOW® Magnesium Transporters combines five different forms of magnesium for maximal absorption and utilization.* Natural color variation may occur in this product.