i took it before golf meets a few times. probably 5. 3 times it really helped me concentrate, the other times i was off the wall. couldn't concentrate, hyper as hell, had a headache, shot my wad in the tourneys. never again.
Kayne that's because both are considered narcotics. Just go to a shrink, act really flighty, like a blonde chick with implants forget stuff, stare off into space, etc.... They'll give you a script.