"i was diagnosed post traumatic stress disorder from iraq war and also which goes along with adult adhd and depression. they say it has a lot to do with my mind, has so many thoughts of what happened, what is happening, etc. racing through it that i guess it basically just gets worn out like exercising but once they started ritalin 20 mg three times a day it helped a lot. more focused, less worried and in time just felt more rested and calm. but did have to force to eat at first. lost my appetite until i got used to it."