Nanoparticle compositions

Abstract

Compositions comprising nanoparticles are described herein. At least a portion of the nanoparticles comprises a lipid and/or polymer which is water-insoluble, and an agent incorporated in the lipid and/or polymer. The nanoparticles are optionally associated with a surface of water-soluble particles which comprise a water-soluble compound. The polymer is optionally a polyanhydride. Further described herein are processes for preparing such compositions, comprising contacting a solution comprising the lipid and/or polymer dissolved in a non-aqueous solvent with an anti-solvent (in which the lipid and/or polymer and agent are insoluble) which is miscible with the non-aqueous solvent. Further described herein are uses of the compositions for nasal administration, and devices configured for nasal administration of the composition upon atomization.

Dependencies are inferred from the claim text.