Magtein Magnesium L-Threonate is a highly bioavailable form of magnesium that’s clinically proven to boost magnesium levels specifically in the brain, supporting cognitive function. It’s often used with L-Theanine and Apigenin as part of a nighttime sleep stack. Backed by multiple studies, this unique chelated form is designed for maximum absorption and brain health. Double Wood ensures quality through strict sourcing and third-party testing.