Pharmaceutical formulations for dry powder inhalers...

A - Human Necessities – 61 – K

Patent

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A61K 9/14 (2006.01) A61K 31/4704 (2006.01)

Patent

CA 2560226

The invention provides a formulation to be administered as dry powder for inhalation suitable for efficacious delivery of low-dosage strength active ingredients to the low respiratory tract of patients. In particular, the invention provides a formulation comprising microparticles constituted of microparticles of a low-dosage strength active ingredient and microparticles of an excipient wherein the MMD of the microparticles is comprised between 2 and 15 micron, at least 10% of the microparticles has a mass diameter (MD) higher than 0.5 micron, and the process of preparation thereof.

L'invention concerne une formulation destinée à être administrée sous la forme de poudre sèche pour inhalation, destinée à l'administration efficace de principes actifs agissant même à faible dose sur la partie basse des voies respiratoires des patients. L'invention concerne notamment une formulation comprenant des microparticules constituées de microparticules d'un principe actif à faible ingrédient et des microparticules d'un excipient, le MMD des microparticules étant compris entre 2 et 15 micromètres, au moins 10 % des microparticules ayant un diamètre de masse (MD) supérieur à 0,5 micromètres, ainsi qu'un procédé de préparation correspondant.

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