About this item OPTIMAL BIOAVAILABILITY: Magnesium is a mineral that is critical for energy production and metabolism, muscle contraction, nerve impulse transmission, and bone mineralization* SUPPORTS HEALTHY MUSCLE, NERVE, AND HEART FUNCTIONS*: It is a required cofactor for an estimated 300 enzymes* NERVOUS SYSTEM SUPPORT*: Among the processes that require magnesium are fat and protein production, as well as glucose metabolism* GMP Quality Assured: A-rated, third-party certification means that every aspect of the our manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product formulation.