I was on 50mg XR one time, my 3rd time (and last) doing Adderall during my high shcool years and it was every couple months, so no tolerance ever had a chance to develop... i took both pills at once, orally, not crushed up, but straight so i could do well in school one time....
i dont kno why i did it when i had good results from 20mg xr before.
it was a mistake.... i was speeding like crazy, grinding teeth, mood swings, and i was sweating at the palms, and armpits, and whatever my skin touched, so my ass sweat, my back sweat on the chair.. i was high as a motherfucker, but it was not pleasurable except for the first 2 hours, and i was very depressed the following 3 days. and its not a dripping hot fuckign sweat... you are cold and even nervous and on the tip mind the whole time... very tense.
so be careful, because AMPHETAMINES (dextro, meth, all the types) ARE VERY DANGEROUS. 40mg is a VERY strong dose to begin with... you will be high, you will be VERY tweaked out
10 mg can give you a high for about 1.5-2 hours and not much of a crash... so i would just do a little if i were you...
oh and when u do it, go talk to some girls or something, it makes you VERY confident and sharp minded.
BTW.. maybe i was so tweaked because it was XR, but that would mean that i ahd less of a dose for a longer period... if you crush up 50mg with some baking soda beforehand.... i think u will be tweaking the fuck out for a good 3 hours then BOOOM crash, it will be bad and unpleasant..