"i was diagnosed with adhd at the age of 5 and have been on ritalin and adderall throughout my entire life since then.  i know long time.  i was switched to vyvanse and this is my first day taking it and i like it so far.  i wouldn&#039;t call it a &quot;miracle drug&quot; for me because i have extreme adhd but it is a lot smoother than adderall xr i was taking prior.  i also feel more emotionally stable and have more confidence. i also take another 10 mg of adderall around noon and another 20mg.  we will see how this medicine holds up to all this good stuff.  i am hoping forever since i will never be able to get off a stimulant medication.  but remember, if you have been on stimulants for awhile and do not take them, you will feel extremely tired and sleep all day."