PHARMACEUTICAL COMPOSITIONS FOR NASAL DELIVERY

摘要

According to the invention there is provided a powdered pharmaceutical formulation suitable for nasal delivery which is a freeze-dried blend of active material and excipient(s) containing: 0.5 - 50 % by wt of active material 50 - 99.5 % by wt of excipient(s), and in which at least 0.1 % by wt of the blend is an amorphous state, which can be directly obtained by freeze drying without the need for milling and without containing the pronounced low particles defined as finings. Such powders retain free-flowing properties on storage, are physically and chemically stable and are readily soluble.