Jaelyn is currently in the study for Denufosol as well. The first six mos she was on placebo. I smelled and tasted the solution just to be nosy and it was no more than salt water solution. Those six months I saw no side effects or improvement/decline. Last six months, we are currently 4 months into it, was the real thing. Smelled and tasted completely different and within 5 days she was hawking up gunk like never before. All cultures are negative so that is a plus, but she is much more productive. Yes, the three times a day is tough. Out of 7 days, we might get 5-6 days that are all 3 times. We do the best we can with the time/schedule we have. Our clinic allows you to continue on the neb after the study. That is one of the main reasons I allowed her to endure the god awful PKU's for this whole year. It has not been a picnic, this study, in any way but totally worth it.