"i used concerta for my add and it worked pretty good.  it gave me a little boost and helped me concentrate better but it kind of just felt like i was on a controlled form of caffeine. the side effects were a lack of hunger, mood swings, and the crash was terrible. i felt tired and got in a terrible mood.  so it does help i&#039;m not going to lie but i have since switched to another medicine because the side effects were too much for me."