Thanks for all the responses. There r def a lot more people doing it twice a day than I thought there would be. I have seen no benefit from pulmozyme in the little over a year my son has been on it, but also no negitive things. I'm not sure why he was not on it beofre that,, and only put on it after I asked about him doing it. And if there is reasearch saying twice a day for FEVs over 75% I am going to ask about him doing it twice a day.
Also, we were always told that it was best if done in the morning, because that is after u just slept and mucus settles more, but we always did it religiously at night to, cause there was more time for it, and at least we were doing it