Alpha GPC is a natural physiological precursor to acetyl-choline, a neurotransmitter that is involved in memory and other cognitive functions.* Alpha GPC is more bioavailable than other forms of choline and is known to cross the blood brain barrier. In the brain and other neural tissues, Alpha GPC becomes a constituent of cell membranes.* Clinical studies have demonstrated that supplementation with Alpha GPC can support the brain's synthesis of acetyl-choline.* In this way, it helps to promote normal cognitive function and mental acuity.*