Hi, I've been taking Concerta XL for maybe 7 months and have expreienced the opposite of what AusBoy94 is saying. I have always been extremly sensitive, emotionally unstable, obsessive, depressed, brain fog, nervous, unfocused, also suicidal thoughts would go through my head. The 7 mnths of my life have been the best ever, I'm used to it now, but when i look back it was hell not life.