"i am a college student and found that for the first two months, concerta worked wonders. it improved my mood, attention, and energy. it even helped with headaches. however, as i write this at 3 am, the side effect of sleep disruption has become unbearable. i either don&#039;t sleep for days or sleep for 20 hours a day for a week. don&#039;t write it off, though. it is definitely effective and adjusting the dose may do the trick."