CRYSTALLISATION USING SUPERCRITICAL OR SUBCRITICAL FLUIDS

摘要

The invention provides a process for preparing essentially crystalline particles containing a substance in solvated form, by dissolving the substance in a first solvent, introducing the solution and a supercritic al or subcritical fluid into an apparatus, wherein the fluid contains an anti-solvent and a second solvent, which is water. Preferably, the anti- solvent is carbon dioxide which is totally saturated with the second solvent, which is water. The invention further provides formulations comprising particles produced according to the present process containing one or more pharmacologically active substances and one or more pharmaceutically acceptable excipients, use of said formulations in the treatment of an allergic and/or inflammatory condition of the nose or lungs and methods for treatment of such conditions.