"i was 31 years old before i began taking ritalin. i take a small dose, 10mg in the morning and 10mg early afternoon. i wish i had been prescribed this medicine years ago. i drive a truck for a living but i also do a lot of self study (audio and printed books) and ritalin has greatly increased my productivity with the latter and safety with the former. i experience very few side effects. my mind used to wander quite often, i just thought i had an active imagination, but it was a problem. i have not lost my ability to imagine or abstract yet i have lost of tendency to wander aimlessly into unrelated thought. i have also lost my ability to get lost so often while driving!"