Methylphenidate
"Was diagnosed as a child with ADD Inattentive. Doctors didn't see the need for drug therapy.  Throughout middle and high school I struggled, and struggled, and struggled.  Couldn't pay attention to any of the material, always looking out the windows,tapping pencils, passing notes. This contined through my first go at college, which I experienced the same set of problems. 10 years after...I had ENOUGH. I found a great Psychiatrist that held my belief that I really had a neurotransmitter imbalance and my life wasnt running at even 70%  After trying a small galaxy of stimulant prescriptions, Concerta changed my life. Straight A student,  i have the drive, focus, willpower and clarity to get stuff done. My confidence level is at "God" level."