I have been on Pulmozyme since it has been out and I would never want to go without it. I f I even miss one day I notice much thicker mucous. I'm like some of you. Besides CF, I have asthma, psudeomonus and mrsa. I do my vest and use advair and albuterol every day too. Also, Tobi is horrible for me! when it first came out I tried it and I had problems with wheezing, coughing alot more and coughing up blood. YUCK! I definetly have a history of hemoptysis, but I still would not go without my Pulmozyme. Right now I am taking steroids because I caught a cold and had some wheezing....which explains why I am up so late (11:30 pm) chatting on the MB!!