Not me, but my oldest son (9) has ADHD, and has been on various meds for the past 2+ years. He's on a pretty high dose of Concerta for the past 20 months, and is pretty decent when he's on meds; not so much when they wear off.
We've spent the last few years trying to understand more about what is going on in that mind of his. We've learned quite a bit, but there's still tons more that is a mystery to us.
We'll be reading this thread with great interest.