Life Extension Neuro-Mag (Magnesium L-Threonate) - 90 Capsules | Life Extension Magnesium Support for over 300 Processes in the Body and Cognitive Function Magnesium L-Threonate in Neuro-Mag can: Support memory and cognitive function Optimize magnesium levels in the brain Help maintain quantity and quality of synaptic connections between brain cells Magnesium in Neuro-Mag Magnesium L-Threonate plays a role in more than 300 processes in your body and can help maintain normal cognitive function when aging.