Methylphenidate
"I'm eighteen and I've had ADD all my life, though I'm only now trying medication for it.  Daytrana helped me a little, but my dosage was too low.  I started out on the 10mg patch.  The biggest issue with it was weight loss.  Now, let me begin by saying that before the appointment where I was diagnosed, I had just eaten lunch.  Shortly after starting Daytrana, I caught a cold that lasted about two weeks, recovered, then caught another two-week cold.  I did notice that I was less hungry while using the patch.  Didn't eat breakfast before my checkup,  My weight went from 120 to 114 lbs.  Doctor took me off Daytrana and switched me to Stratera, which has been a nightmare.  While on Daytrana, I felt more awake, but not necessarily more focused."