Okay so M has been on Concerta (successfully) since 2nd grade. Dosage adjustments have been made , but over all it has really helped him. Since he has been having some ODD issues really apparent recently, I have been doing research on Concerta and feel that perhaps this may be the cause. Anyone have any other experience of effective ER ADHD medications that DON'T have the side effects that mimic the ODD? If you had experience with ODD by thought it might have been caused by concerta (or other drug), what did you change to? What is found that the medications were the instigator? If you tried more then one, what was you experience with them?