I was just wondering, I took Vyvanse for 2 years, after awhile it stopped lasting all day it's supposed too past12-14 hours . I told doctor and he switched me too 20mg Adderall 3×day now I can control better and take meds at different times depending on day, I was wondering if anyone else had vyvanse stop working well ? Also anyone ever taken Focalin xr does it do good job and last?