insomnia | ADHD Information

My 8 year old son is on concerta which is still not helping him (he was on 27 mg now hes on 36mg) still no change, but it has given him, head aches,stomach aches and for the last 5 weeks insomnia. I  put him to bed a 8 pm and he still a wake at 9:30 or  later still laying in bed. anyone have and ideas what I can do ,beside call and talk to his doctor.Who did give him an allergy med to get him drowsey which does not work either. Im desprite.Any advice will be appreciated . avred7138841.475625