"when i first took concerta, i was more able to concentrate on hard tasks, such as writing and doing math calculations. when i stopped taking this medication, i was unable to pay attention in class, and kept misplacing flash drives and pencils. plus, i&#039;ve got a bunch of d&#039;s and f&#039;s on essay assignments because i&#039;ve been leaving add untreated for six months. 

concerta helped me concentrate, but it didn&#039;t make me too jittery or not focused enough, and it feels just right. when i came back to the medication, after six months of not taking it, i&#039;ve had the best school days i&#039;ve ever had in my life. this medication works, no nonsense, just don&#039;t drink too much coffee or energy drinks if you don&#039;t want a fast or irregular heartbeat."