Interesting topic... I can be sleepy after taking my Adderall and drinking coffee.

Before I knew I had ADD, I was exhausted All the Time, but also had trouble going to sleep. I'd be passing out at work or could fall asleep as soon as I got home from work. I have kids, so going to sleep after work is not an option. When everything was done at night, I Couldn't Go To Sleep! I call it the "Slide Show". I can't fall asleep because my mind just flashes one thing after another when I used to lay down.

After my ADD diagnosis and Adderall treatment my sleep pattern was greatly improved. The thing is, without meds (Stimulants) I can't go to sleep well, with meds I can. I get better rest on 6 hours medicated sleep than I used to with 10 hours non-medicated sleep.

I actually take my last dose of Adderall later in the day (4pm) because I sleep Better than taking the last dose at 2pm.