Springray. Sounds strange but I got the same info from someone on a uk site so you're not alone & they've gone back to Strattera. Hope u get sorted out, how long have you been on the higher dose? I started Concerta on Sat - couldn't sleep last night felt wired & weird, difficult day at work today I'll be glad to get levelled all this changing meds & doses is really tiring, still at least I'm not the only one!! Good luck!!