Meet the high-octane magnesium formulation designed to do more for your cognition, mood, and sleep than the basic magnesium brain supplement. Liposomal Magtein combines Quicksilver’s unparalleled liposomal delivery technology with brain-centric magnesium L-threonate (Magtein) and high-purity phosphatidylcholine (PC)—a well-known phospholipid that supports neuronal membranes and healthy neurotransmission.