I take Aderall
and will say I haven't taken it in a good while, The shit is addictive and easy to misuse
ex:Went clubbing one night and popped 80mg worth and was wired till about 8am the next morning...took them at 9pm the previous night.
They claim after so much your body just excretes the leftovers but I haven't found anything in that little experiement to believe that.
Aderall is similar to Ritalin, but less harsh on your ability to eat, sleep, and so on
I can take it and still go to sleep if I need too