ADHD
"I was prescribed Concerta 54mg for two weeks, and after two weeks my dosage was lowered to 36mg. The positive effects: First of all, it was absolutely effective at keeping me focused, engaged, and gave me the motivation to continue working away at my given tasks. It also accelerated my perception of time. The (manageable) negatives: It made me so focused on tasks that I was antisocial. Fixating on annoying sounds, anxiety, sweaty palms, no appetite, and weight loss (25lbs). I found I was lacking emotion, and during the long comedown I was irritable and rarely I experienced mild to moderate depression. Concerta is an effective ADHD drug, but the emotional effects can be annoying at times. It is worth consulting your doctor about!"