My 11 yr old nephew is on 80mg. He was orginally taking 40 and a month ago they upped his dosage to 80mg. My brother and many others have noticed that his is like a zombie and seems to cry all the time. His teachers are elated say that his behavor is fantastic. Of course it was the teacher that demanded his dosage be upped. I'm really scared this is a child who never cries and can go for days and days. He is exceptionally bright and is often considered to be to smart for his own good. Hmmmmmm I guess what I'm asking is does anyone out there have an 11 yr old child on 80mg who by the way only weighs about 75-80lbs.