EACH CAPSULE = 650MG MAGNESIUM THREONATE (OF WHICH 45MG IS ELEMENTAL) - NO OXIDE OR ADDITIVES... Magnesium is arguably the most important mineral in the body, since it is critical in over 300 chemical functions... including protein synthesis, bone development/repair, muscle and nerve functioning, energy production, and more. Unfortunately, the majority of people are now magnesium deficient.
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