Hello I am a mom of a child diagnosed with ADHD. He currently takes Concerta 27 mg and I find him gradually become more aggressive everyday. When he was on Ritalin I very, very rarely had an issue with aggression with him. I am doing everything that his doctor and neurologist are telling me to do but to no avail. Ive cried many days and feel like a failure to my son though I will never give up on him. In talking with friends is similar situations, I am starting to feel that the Concerta is making my son more aggressive and I am worried about him seriously hurting himself or others. Any thoughts and suggestions regarding other medications will be gratefully appreciated. He was referred to pysch but cant get an appointment until November.