DS1 had his Concerta dose doubled and we then had to get his melatonin doubled.....however still doesn't seem to settle him as it did at the start of treatment- we've tried missing a couple of days to see if that helps- NO! I know that 'normaly' they say even 1mg can 'trigger' sleep- however as ds1 has ADHD and AS maybe 1mg would have never worked- we were started on 2.5mg and he's on 5mg now...just wondered if anyone out ther has a child on more than this- he's 10 and a big lad...if he has 5mg at 7.30 and is not put in bed promptly at 8/8.15 then we appear to have missed the 'slot' and he's as wide awake as ever by 9!!!! Wondered whether we should 'split' the dose in two- some at 7.30 and some immediately before he gets in bed???