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 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 composition, comprising diazepam to form a vapor; and, b) allowing the vapor to cool, thereby forming a condensation aerosol with less than 5% of the 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