narcolepsy
"I have been taking one 10 mg spansule and one 5 mg tablet in the morning and same dose at lunchtime for over ten years (since I was diagnosed with Narcolepsy). It has been a life saver for me.  Keeps me alert while driving. I was told by several Doctors over the years to STOP taking it because I would need more and more of it as time went on. My dose has always been the same and I sometimes don't take all of that. My neurologist has recently started me on Nuvigil and since that may work by itself I have decided to taper myself off the Dexedrine to see if the Nuvigil may be all I need. So far no problems. I agree with comment that Dexedrine has an un-deserved bad rep. "