I have started on the 150mg, but in the afternoons I find myself crashing and sleepy. What is recommended to counter this? Can you take an adderall later in the day? Or a higher dose earlier? I have adhd, inattentive, and previously was on 30mg a day of adderall, before switching regimes to try nuvigil as a substitute. I feel invincible in the morning, with great ideas - but pooched out at lunch or before.

I have had one night with real insomnia thus far.