adhd
"I have been on Vyvanse for about 10 months.  It is an amazing drug to reduce distraction, calm the hyper/distractable me and just enjoy life a bit better.

The only downside for me are two things:  

firstly, the afternoon crash can suck.  I often am left feeling a little anxious or irritated.

The other thing, and probably the more annoying side affect, is that is does impact my sleep.  

To minimize these side affects, here are my tips that work for me:

1) stop drinking coffee or other stimulants.
1b) wait until you are properly awake before you take it... 
2) don't drink on medication days.
3) schedule your diet and stick with it.
4) exercise in the morning (before taking it).
5) have your no medication / chill days."