Magnesium requirements

Physiology:

Magnesium has a widespread physiological role in neuromuscular functions and enzymatic systems.  Factors affecting calcium homeostasis also affect magnesium homeostasis.  Magnesium movement generally follows that of phosphate and is the opposite of calcium.

Empiric daily requirement

Adults:  8 to 40 mEq/day

Infants/children:  0.25 to 0.5 mEq/kg/day