"i am a college student who was having the hardest time concentrating while reading and writing. while reading my thoughts would take me away from the material in a matter of seconds, and while writing i would usually forget the end of the sentence of which i was writing before i got to it. after taking this medicine, 150mg once a day, for a couple months, i began experiencing a marked difference. i was finally able to be absorbed in my reading and could hold my thoughts while writing in a way i had never done before. however, recently i feel like the effects are wearing off. i am beginning again to not be able to pay attention while reading and writing. perhaps moving up to 300mg will sustain the effects."