adhd
"I was previously on Adderall XR before going on Vyvanse. My reason for switching was because I suffer from BED as well, which this drug is basically a miracle drug for. As far as how this drug functions as an ADHD med, I do not think it is as effective as Adderall but it does last for a really long time, which has its pro's and con's. If you take it too late, you will have a hard time sleeping and if you want to go to happy hour or grab a drink that day, because this drug takes anywhere from 9-11 hours to leave your system, you won't be able to feel the effects of alcohol or the effects of the alcohol will all kick in at once Vyvanse leaves your system (be warned). But if you want to get a lot done during the day, its good."