it is no wonder that the Biaxin is doing well for your son as it is a macrolide as well (clarithromycin) and
works as an anti inflammatory. Those with CF have been prescribed
long term antibiotic therapy with Zithromax for some time now, that is how I came to being put on it...not for my asthmatic problems. I agree with you, it has done wonders as far as needing less bursts of steroids etc...and having fewer exacerbations.