Alpha-GPC (GPC choline, choline alfoscerate),according to the definition from Wikipedia, is a natural a water soluble choline compound found in the brain. Alpha-GPC rapidly delivers choline to the brain across the blood–brain barrier and is a biosynthetic precursor of the acetylcholine neurotransmitter. Alpha GPC is a non-prescription drug in most countries due to its Generally recognized as safe (GRAS) status. It is also a parasympathomimetic acetylcholine precursor which may have potential for the treatment of Alzheimer’s disease and dementia. Alpha-GPC is also used as a nootropic dietary supplement to enhance memory and cognition.