2.There are also medications like N-acetylcysteine which cleaves disulfide bonds in the mucus glycoproteins and dornase alfa which is a nuclease that cuts up nucleic acids in the mucus to thin it out.
3.Intravenous iron therapy can sometimes be useful, and when hemoglobin levels fall below 7 grams per deciliter, transfusions with packed RBCs, or erythropoietic agents like epoetin alfa or darbepoetin alfa may be given to improve symptoms.