"i am 18 and i&#039;ve been on concerta for just over a year now, and i took an extra year of high school to catch up, i went from a 60 in math to a 90, i felt like i had a whole new brain. like others, i was a funny, outgoing, active person but i now find myself completely content with being alone, infact i prefer it. i easily become irritated by spending time with others. i&#039;ve also experienced uncontrollable mood swings, and i spend a lot of time crying. lately, i&#039;ve been losing focus though regardless and my dosage is already at 54mg. i&#039;m so happy with my grades, and in the beginning i was myself, but in the past few months i&#039;ve become a machine, and all i think about is how much work i need to do."