Methylphenidate
adhd
"I've been taking concerta for the past five months. When I first began taking it, I would get headaches and appetite problems, but those side effects dissapeared after about three weeks on it. Concerta has not only improved the amount of work I'm able to accomplish, its improved my self esteem as well. I no longer feel as shy and cluttered as I did before I started taking concerta. I like that it lasts throughout the entire work day, so I don't have to worry about redosing. Overall, concerta has been a very positive experience for me."