Magceutics, Inc. are the inventors, creators & patent owners of Magtein (Magnesium L-Threonate). Our Magtein is the Original Formula designed by the inventors and patent owners in order to achieve optimal results. Why buy directly from the Inventors? We are a Nutraceutical company led by scientist, putting people first and focusing on health. We stand by our product and offer personal advice to our customers. We control the manufacturing and processing of our product, which is the most accurate formula in the market and specialize in ONLY one product, Magtein.