"i have been on ritalin for 5 months now and it works great for my adhd. i wish i would have been on it when i was in high school maybe i would have finished high school. i am 25 yrs old and i&#039;m going for my g.e.d so i can go to college. i am so happy now i can concentrate and do things that i was never able to do. the only con is that it is not lasting as long as it did when i first got on it. i really believe ritalin saved my life."