Short release didnt. I have taken adderall for a few years and basically cannot function without it. I recently switched my primary dr. and he gave me adderall xr, I have been experiencing very bad pain on the roof of my mouth which makes it impossible to eat and swallow. He insists that there is no difference in the contents of the two forms of the drug and there isnt a possiblity that the xr is causing this. Could he be wrong?