bad boy here---the neat thing on dex is it's been around so long. i ran into it decades ago as a U student. when exams were coming up, every student i knew was taking it and 'cramming'. i'm on it now, by script, as an attempt to counter risperdal damage. the new wonder-drug deprenyl, proven to extend lab rats lives 30%+ and make old rats act young, has two main metabolites--methamphetamine and dexedrine. interesting---when in my twenties, twice i cracked severe depression with dexidrine---i thought shrinks were guys that looked like freud and you laid on a couch. deprenyl is exspensive. dex is cheap.
and i never had a problem just stopping---when depression was gone, it just made me nervous. best wishes

pirate