Best Brain Magnesium supplies magnesium l-threonate (Magtein) a unique magnesium compound for delivering magnesium to the brain. Magnesium is essential for the brain connections (synapses) that facilitate learning memory attention and all other brain functions. The l-threonate salt extends the action of magnesium. In preclinical studies Magtein performed better than other magnesium compounds for synapse support. Best Brain Magnesium is a breakthrough for brain health.Other products from HerbsPro