i recently just started vyvanse and i feel like all of my effects are completely different from anyone else. i know everybody has a different reaction but mine seem very different. i take 40 mg at about 730 am. for periods 1-5 (until about noon) i feel focused and get a lot of work done (you say it takes about 3.5 hrs, but unless its all in my head, i feel the effects within about 45 min). then, it always seems that at 6th period (always the same time), no matter how hard i try, i can't get myself to focus. i become reserved, don't talk to anyone, and even other people notice i'm in a bad mood (opposite of the morning). is all of this in my head or is it possible that its due to the medication?
Vyvanse reaches therapeutic levels in the body in approximately 3.5 hours.