I tried Adderall and found that it was not as effective as Vyvanse. I was told by my shrink that Vyvanse is "cleaner" and I know that it is used more in children due to that. There is a genericc now, thank goodness, however it is still expensive, but I have to function. It helps with my brain fog, racing thoughts and helps me do daily activities. It lasts about 10-12 hours. The Adderall is cheaper, and as a person in recovery, I also did not want to take the chance of relapse. Those are just my experiences with these drugs. There is also a medication called Modafinil (Provigil) that I found helpful as well, but the Vyvanse has certainly helped not only with the ADHD, but also with the fatigue and malaise. I take it in the morning and I feel better within about an hour or so. Keep me posted. Hang in there.