This thread is so wrong I just had to step in...
ADDERALL is a HIGHLY ADDICTIVE AMPHETAMINE.
AMPHETAMINE = SPEED.
Using drugs to get through your studies is not the way to go. I have seen too many people ruin their lives with crystal meth specifically. Don't learn it the hard way, learn it the easy way, right here: stay off the drugs. Use your own talents to get where you need to go. If you start on pills you may wind up getting hooked, and from there to smoking crystal and winding up without a job and without any friends is not that big a step. Don't start.