[Chemistry] - vitamins - fructose - choline {a nutrient; necessary for memory function} - Ephedra {an herb; stimulant; source for Ephederine Hydrochloride} - Phenylanlanine {an amino acid; stimulant} - Caffine {stimulant} ----------------------- the membrane that connects left & right brain is called the corpus callosum ----------------------- piracetum (piracetam) - said to enhance cerebral metabolism common claims for "COGNITION-ENHANCEMENT" ("nootropic") drugs center around piracetam, vasopressin, hydergine, choline, DMAE, and maybe a little centrophenoxine.