My son has been on a fairly low dose of Ritilan for about 6 months. He takes 10mg in the am and 5mg at noon. During the day it has been wonderful. He is attentive, reasonable, and finally a joy! But after 4pm all bets are off. He becomes OUT OF CONTROL! He will not listen to anything, cannot sit still for more than one second, and has outrageous melt downs constantly. We cannot leave the house in the evening AT ALL! His doctor recently switched him to concerta 18mg and he takes one in the morning. After about a week on it we have concluded that it doesn't work. You can't even tell that he took it. He is wild, defiant, and prone to melt downs and violent outbursts all day long. We are now trying to figure out what to do next. Should we try a different time release med or go back to Ritilan and deal with the rebound? Any suggestions would be appreciated.