Several studies indicate that synaptic connections in the hippocampus, a brain region critical for learning and memory, decrease during the normal aging process. NeuroMag™, which uses Magtein™, a unique and patented chelated mineral, contains magnesium that is chelated to threonic acid (magnesium L-threonate). It is superior to other forms of magnesium for crossing the blood-brain barrier because it is capable of transporting magnesium ions across lipid membranes, including those of brain cells.