I unfortunately don't know too much about ADHD/ADD, I did look up some info on the net to help me understand.
I don't use my meds anymore, as I didn't notice enough improvement. I really cannot concentrate well and tend to switch off. I do many tasks at once and never seem to finish any. I cannot work on strict guidelines...
Though when I hear what your brother experiences, I certainly can relate. I am a "hot head".