Swanson Magnesium L-Threonate featuring Magtein promotes healthy neuronal activity for the support of healthy cognitive function. Traditional solutions for cognitive support involve stimulating the neurons to promote peak brain function, but over time, this can lead to burnout. Magnesium L-Threonate works differently its patented form of magnesium nourishes the brain and is the only form known to readily cross the blood-brain barrier. Each serving now delivers 144 mg of Magnesium from 2.01 g of Magtein to protect the power of your mind. Now available in a veggie capsule, this formula provides a 30-day supply of advanced cognitive support.