I am only taking choline so far...it is a legal supplement, safe, no side effects. It really inreases concentration and helps memory. Never take more than 3 g a day (and never start with 3 g). Don't forget pantothetic acid if you decide to try it. This formula is popular among MIT students. There is an egroup smartdrugs and a usenet group alt.drugs.smart for those who want to discuss their experience.
