Emulsions comprising aminopolysaccharides.

摘要

A biocompatible, substantive, film-forming delivery system for delivery of pharmaceutical or therapeutic actives to a desired topical site of a subject, said system comprising an emulsion comprising A) at least one pharmaceutical or therapeutic active; B) an aqueous fraction comprising at least one aminopolysaccharide derivative selected from the group consisting of chitosonium polymers and covalent chitosan derivatives; and C) a non-aqueous fraction which is not soluble in the aqueous fraction, and wherein said system, after delivery to said site, provides a substantive, gas permeable film from which the actives are available for treatment of said subject at said site.