I take Vyvanse, I also have ADHD - inattentive type. It works. Keeps me alert without keeping me up at night. I take it in the morning and it's worn off by bedtime. I've been on it for 3 years now. No problems with it. I did get manic once when I was taking it but it was only after my old pdoc pushed adderall WITH IT. I dropped the adderall and was ok. I was also on the equalivant of 3 antidepressants at the time. It was not good, the amount of those meds I was on. But, Vyvanse, I have no problems with just Vyvanse and my current meds.