Patent ID: 6271200
Filing Date: 2001-08-07
Classification: A61K,A61P,Y10S

Abstract:
An aerosol pharmaceutical formulation with multilamellar vesicles, comprising i) a pharmaceutical agent, ii) water, iii) an alkali metal C8 to C22 alkyl sulphate in a concentration of from 1 to 10 wt./wt. % of the total formulation, iv) at least one membrane-mimetic amphiphile, v) at least one phospholipid, vi) a phenol selected from the group consisting of phenol and methyl phenol in a concentration of from 1 to 10 wt./wt. % of the total formulation, and vii) a propellant selected from the group consisting of C1 to C2 dialkyl ether, butanes, fluorocarbon propellant, hydrogen-containing fluorocarbon propellant, chlorofluorocarbon propellant, hydrogen-containing chlorofluorocarbon propellant, and mixtures thereof,wherein the membrane-mimetic amphiphile is selected from the group consisting of lauramidopropyl betain, lauramide monoisopropanolamide, sodium cocoamphopropionate, bishydroxypropyl dihydroxypropyl stearammonium chloride, polyoxyethylene dihydroxypropyl stearammonium chloride, dioctadecyldimethylammonium chloride, hyaluronic acid, pharmaceutically acceptable salts of hyaluronic acid, sulphosuccinates, stearamide DEA, sodium tauro dihydro fusidate, fusidic acid, alkali metal isostearyl lactylates, alkaline earth metal isostearyl lactylates, panthenyl triacetate, cocamidopropyl phosphatidyl PG-diammonium chloride, stearamidopropyl phosphatidyl PG-diammonium chloride, borage amidopropyl phosphatidyl PG-diammonium chloride, borage amidopropyl phosphatidylcholine, polysiloxy pyrrolidone linoleyl phospholipid, octylphenoxypolythoxyethanol, and combinations thereof, andwherein the phospholipid is selected from the group consisting of, phospholipid GLA (glycolic, lactic acid), phosphatidyl serine, phosphatidylethanolamine, inositolphosphatides, dioleoylphosphatidylethanolamine, polysiloxy pyrrolidone linoleyl phospholipid, sphingomyelin, ceramides, cephalin, triolein, unsaturated lecithin, saturated lecithin and lysolecithin, and combinations thereof, andwherein each membrane-mimetic amphiphile and phospholipid is present in a concentration of from 1 to 10 wt./wt. % of the total formulation, and the total concentration of membrane-mimetic amphiphiles and phospholipids is less than 50 wt./wt. % of the formulation.