Narcolepsy
"I have taken Adderall XR for YEARS now.  I have MS &amp; as a result have hypersomnia, which is very similar to narcolepsy.  For years &amp; years, I took Provigil alone for this &amp; it was great.  But eventually, Provigil was no longer enough to keep me awake.  My doctor tried me on Adderall XR &amp; it was amazing.  I was able to stay awake ALL day long &amp; felt great.  I never had any real jitteriness.  It does make me have almost no appetite at all, ever.  Mostly I just don&#039;t think about eating, it doesn&#039;t really occur to me &amp; when I do eat, I can&#039;t eat much.  But, having been obese most of my life...this hasn&#039;t exactly been a problem!  "