Compositions comprising therapeutically effective amounts of lamellar bodies for the modification of linear macromolecules are disclosed. These lamellar compositions are useful in the treatment of conditions or diseases characterized by a preponderance of heavy mucous secretions, such as otitis media, cystic fibrosis, bronchitis, sinusitis and nasal congestion. Methods of treating these diseases and conditions by administering a therapeutically effective amount of a composition to a patient requiring such treatment are also disclosed.
