I know there is a lot of different info out there on Pulmozyme. My son Eli started on it at about 15 months. When he was 20 months he had a bronch and his lungs looked really good, no inflammation. I would have thought that if the Pulmozyme was doing any damage we would have seen it then. During the bronch the Dr. did say that Eli had a lot of tiny, spaghetti like plugs in the smallest regions of his lungs. We actually decided to start him on Pulmozyme 2xs a day in hopes that it might help reduce those plugs. Eli shows no discomfort from the drug. I 'think' that it works well for him although there is no way to know exactly how much, it's just a feeling that I have.
Good like making the decision, it's so hard!