"my son is 13 yrs old and has been on concerta for a couple of months for add.  he is doing great on it.  he is able to focus and his grades are back to a&#039;s and b&#039;s.  one thing i like about this medicine is that he is not losing weight on it.  he still has a great appetite.  the first two weeks his appetite was affected a little but now back to normal.  i would recommend this medication.  i even get positive feedback from his school."