Both twins were diagnosis with-ADHD last Friday, and Concerta 18 mg started on 10/01/08. They have only been on for 2 days!!! difficult child 2 doing fine so far. difficult child 1 doing great during day but when I am getting them to wind down at 8:30 p.m., the last two nights he has been extremely aggressive. It's been over little things that usually I don't get that kind of response from him. (turning off movie and that he can't play on the computer at what usually ends up 9:30/10 at night) I've had to literally hold him down. He's been hitting me, yelling, screaming, kicking. Tonight I started in a soft voice trying to calm him down - and then it escalates. I don't think I should even give to him tomorrow . . . I'm calling PDr in a.m. who prescribed medications. Case mgr all of a sudden wants a psychiatric evaluation for both boys. Help!!! I'm happy with the results so far - but not happy with what I am dealing with when he comes off medications.