I was diagnosed with adhd and has used concerta legitimately and crushed / parachuted. He has gone quite high with his dosages and does not get any effects except accelerated heartrate and claminess. He is going to see his doctor about changing to something else, but he wants to come in knowing what to ask for, as his doctor does not specialize in adhd. but first a couple questions for members: - Has anyone tried concerta and been disappointed as well? - If so did you find anything better? - Does Adderall work for many if Concerta doesn't or vice versa?