"i&#039;ve been taking concerta for nearly five years now and just recently it hasn&#039;t been working as well as it used to. i was diagnosed with add in 6th grade and was then prescribed this medication. i&#039;ve been taking it ever since. but back in may, i started to notice that i was having a much harder time focusing. it was almost like i hadn&#039;t taken it at all. this was very unfortunate since at that time i was having my end of year exams. i&#039;ve also seen that others have been having the same problem. i&#039;m looking forward to having this sorted out because my add is very bad and makes it very hard just to function in everyday life."