Katie - A few years ago, I had the world's worst case of walking pneumonia and, after 3 weeks of a hacking cough that would keep me from sleeping, eating, resting, etc, I finally talked to the doc. He prescribed this really tasty cough syrup that was half codeine, half Robitussin. I was over the cough in 2 days... mainly because I fell asleep at about 730 on a Saturday morning & didn't wake up until almost 6pm the next day!