"i&#039;ve been taking concerta for 3 years now and i&#039;m 18. i started out with 18mg and slowly went up to 54mg. my grades went from really low to average in weeks but the side effects are really crappy. i have troubles sleeping at night and i feel things that aren&#039;t there. i also have a big loss of appetite and have to force myself to eat sometimes. i have days where i get really depressed to the point that i don&#039;t want to get out of bed and do anything. i also feel really anxious and on edge and i start scratching/ picking at my skin which gave me scars all over my back. i thought about it and went off the pill and my grades suddenly dropped again. the pill really does help with focus and motivation but the side effects are really tough!!!"