I was diagnosed with ADD at age 43 and for 3+ years now I've taken Generic Adderall. Before I knew I had ADD I had issues sleeping because of what I call my minds "Slide Show". I would lay down and my brain would just start flashing one thought after another, continuously. I sleep MUCH better since my diagnosis, but I believe I started sleeping better when I took my last dose of Adderall "Later" in the day. I used to take my last around 2pm and pushed it off until about 4pm. This helps me be better at home and I think when the meds wear off I'm tired for sure, but the "Slide Show" becomes an issue again.

I take 20mg at 5am, 20mg at 10am and 10mg at 4pm...