Get multi-benefit cognitive and sleep cycle support with MegaFood Magtein (1) Magnesium L-Threonate. Made with 2,000 mg of clinically studied Magtein(1) per serving, this supplement enhances short-term memory (2), sharpens focus (2) and attention, and promotes mental alertness while supporting a normal sleep cycle. In this unique formula, Magtein(1) is paired with L-Threonate to help increase the brain's Magnesium levels, which is crucial to supporting cognitive function. Every serving also offers 100 mg of blueberries, a source of polyphenols known for their antioxidant benefits.