Has it been suggested by any of your doctors to start your infant on hypertonic saline treatments? I know there is currently a study being conducted regarding safety in infants - the issue being wether or not they can tolerate it as it can be irritating to their already smaller airways. Our CF doctor is against it but hasn't given a specific age that he feels is appropriate/safe. From my understanding, the earlier you start, the better (i.e., less damage to the cilia and less accumulation of mucus has occurred if you start early). Just wanted your thoughts...if your child is using hypertonic saline, how old were they when they started?