"i was always smart, but my career has accelerated rapidly thanks to this drug.  i have the stamina and focus that i just would not have otherwise.  i had trouble  with concentration in college and it wasn&#039;t until i started taking vyvanse that i finally was able to complete tasks in a reasonable amount of time.   my gpa went from a 3.3 to a 4.0. 



 all the positives aside,  i missed the pill today and basically ate the entire house.  withdrawal effects are brutal."