Compositions useful for treating membrane-associated diseases, conditions, and disorders, including inflammatory diseases, dry mouth, primary ciliary dyskinesia and platelet aggregating disorders, are disclosed which comprise at least one lantibiotic compound. Also disclosed are pharmaceutical compositions and methods of treatment for membrane-associated diseases such as inflammation and dermal irritation, as well as use of such compositions in the treatment of membrane-associated diseases, wherein the pharmaceutical compositions contain at least one lantibiotic.