Today was the first time I gave my son a stimulant medication, Concerta. Does anyone have experience with these medications? I gave it to him at 2pm (I know late in the day), he fell asleep in the car on the way home. At 5pm we were eating dinner and he was up off his chair and couldn't sit still-like he normally would have been!? I was confused, I thought he would be sitting still in his seat. He then fell fast asleep at 9:30. I thought he would be up all night after giving him the medications at 2pm. I don't know if this is the way he should react. I want to try the medications to see if it will help the hyperactivity I see in him. However he can sit and be completly engaged when he wants to be at school and home. Could use advice???