are you on any anti depressant medications? some medications will diminish the effects of amphetamines greatly or cancel them out, im not sure which ones. 50mg is a hefty amt. for someone who ha sno tolerance, maybe you were looking for something out of dexedrine and based it on that? Dexedrine gives you a laid back stimulating buzz, it is nothing like adderall, it does not give u bursts of energy like adderall or make you sweat profusely...its a lot smoother then adderall, maybe u were expecting more sppedier effects? did u notice any euphoria or mood lift? obviously it has affected you if it's been over 24hrs and u stiill cant sleep..im sure dexedrine worked fine for you, it's just not your cup of tea. by the way sniffing amphetamines is a total waste, it provides a complete 150% different high then when taken orally, when snorted its short lasting, it feels more cocainish, with more visible negative side effects, while when taken orally, you wanna talk your mouth off, clean, do homework assignments, etc.be obsessive and your high for 4-6 hours, the after effects can go up to 36hrs of stimulation minus euphoria..just my 2 cents, i was not happy with dexedrine when i first got on it, the 15mg spansules. i was a bluelighter and i read all this AWESOME STUFF ON DEXEDRINE AND HOW ITS SOS UPERIOR TO ADDERALL, so with the advice of bluelight i asked my shrink to switch me to dexedrine 15mg spansule 2x a day, i regretted it, i know dexedrine is adderall cuz addys have d-amp in it, but it just didnt feel as euphoric as addys, idk it was weird... good methods for sleep after dexedrine: masterbation/sex (being serious) eating food, drinking water, vitamins, possibly some benzo, if not, benadryl.