CA2611147C — Topical emulsion formulation

USPTO Abstract

A pharmaceutical aerosol foam composition, comprising an effective amount of a pharmaceutically active ingredient, wherein said pharmaceutically active ingredient is a vitamin or analogue thereof; an occlusive agent; an aqueous solvent; an organic co-solvent; wherein the pharmaceutically active ingredient is insoluble in both water and the occlusive agent; and the occlusive agent being present in an amount sufficient to form an occlusive layer on the skin, in use. The pharmaceutically active ingredient can be selected from vitamin D3 and vitamin A and/or their analogues such as calcipotriene, tretinoin, acitretin, etc. In a second embodiment, an oil-in-water emulsion having a vitamin; an occlusive agent; an aqueous solvent; and an organic co-solvent, wherein the occlusive agent is present in an amount sufficient to foam an occlusive layer on the skin. The composition can be used to treat dermatological disorders such as psoriasis.