NearoMag now has 180 capsules bottle. NeuroMag features the unique, patented, chelated mineral Magtein, which contains magnesium that is chelated to threonic acid (magnesium L-threonate). This highly bioavailable form of magnesium is formulated to promote brain concentrations of magnesium.* Magnesium L-threonate is an ionophore, which has the ability to transport magnesium ions across lipid membranes, including those of brain cells. Magtein is superior to other forms of magnesium at entering through the blood-brain barrier.* This product is designed to support cognitive function, memory, and overall brain health.