Delivery of diazepam through an inhalation route
First Claim
1. A composition for delivery of diazepam consisting of a condensation aerosol a) formed by volatilizing a thin layer of diazepam on a solid support, having the surface texture of a metal foil, to a temperature sufficient to produce a heated vapor of diazepam and condensing the heated vapor of diazepam to form condensation aerosol particles, b) wherein said condensation aerosol particles are characterized by less than 5% diazepam degradation products, and c) the condensation aerosol has an MMAD of less than 3 microns.
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Abstract
The present invention relates to the delivery of compounds for the treatment of anxiety disorders and symptoms of such disorders through an inhalation route. Specifically, it relates to aerosols containing diazepam that are used in inhalation therapy. In a method aspect of the present invention, diazepam is administered to a patient through an inhalation route. The method comprises: a) heating a thin layer of diazepam on a solid support to form a vapor; and, b) passing air through the heated vapor to produce aerosol particles having less than 5% drug degradation products. In a kit aspect of the present invention, a kit for delivering diazepam through an inhalation route is provided which comprises: a) a thin coating of a diazepam composition; and, b) a device for dispending said thin coating as a condensation aerosol.
133 Citations
8 Claims
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1. A composition for delivery of diazepam consisting of a condensation aerosol
a) formed by volatilizing a thin layer of diazepam on a solid support, having the surface texture of a metal foil, to a temperature sufficient to produce a heated vapor of diazepam and condensing the heated vapor of diazepam to form condensation aerosol particles, b) wherein said condensation aerosol particles are characterized by less than 5% diazepam degradation products, and c) the condensation aerosol has an MMAD of less than 3 microns.
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5. A method of producing diazepam in an aerosol form comprising:
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a. heating a thin layer of diazepam on a solid support, having the surface texture of a metal foil, to a temperature sufficient to volatilize the diazepam to form a heated vapor of the diazepam, and b. during said heating, passing air through the heated vapor to produce aerosol particles of the diazepam comprising less than 5% diazepam degradation products, and an aerosol having an MMAD of less than 3 microns. - View Dependent Claims (6, 7, 8)
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Specification