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