NeuroMag™ uses the unique, patented mineral Magtein® — a magnesium chelated to threonic acid (magnesium L-threonate) — a highly bioavailable form that has the potential to cross the blood-brain barrier. This form of magnesium has been shown to be superior in repleting magnesium in the body compared with other forms. Research demonstrates that elevating brain magnesium content through supplementation with magnesium L-threonate may be a useful strategy to support cognitive abilities and healthy memory.* Recommended Use: Take 3 capsules per day or as directed by your health-care practitioner.