I'm completely symptom free while on antibiotics and the symptoms return when I stop. I recently started adding mupirocin
antibiotic ointment to my nasal
rinses. While it is water soluble, it doesn't seem to breakdown enough to coat the sinuses. Right concept, wrong application, I think. There are antibiotic nasal sprays out there that I want to try. http://www.woodlandhillspharmacy.com/compoundcategories/ent.html.