adhd
"Vyvanse has changed my life in the best way! It's almost like a motivation pill.  I can spend 12 hours in the library at a time studying, with little distractions. I made a 4.0 my first semester of college. I used to always want to work hard and study but could never quite pull it together, and with Vyvanse I can! The only downside is the dehydration. Remember to drink lots of water or you will get headaches!"