"i began strattera two days ago and the first day i had problems urinating immediately. i also noticed problems holding an erection. day two was even worse as i could hardly urinate and when i got sexually exited i could not have an erection at all. i have never had sexual problems before and urinating has always been normal. i blame strattera because it&#039;s the only new medication i was taking. i also take lithium for depression and prozac for my sexual addiction. "