Nature's fusions magnesium l-threonate 2000mg - unflavored why threonate? this amazing supplement is made with 100% pure magnesium l-threonate which is renowned for it's ability to coginitive function, memory, sleep and muscle health why nutri? at nutri we believe in making the highest quality and most effective products on the market, so that you can be confident that you're getting the best of the best. Memory cognition high absorption. Nature's fusions magnesium l-threonate 2000mg - unflavored (60 servings)