Inhalation compositions
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United States of America Patent
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Sep 25, 2012
Grant Date -
Dec 23, 2004
app pub date -
Aug 21, 2003
filing date -
Aug 21, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provides a dry powder inhalation composition comprising medicament particles and a mixture of lactose particles with a VMD of between about 70 and about 120 microns and a diameter of less than 250 microns, the mixture being characterized in that up to 96% by weight of the lactose particles are less than 150 microns in diameter and wherein up to 25% by weight of the lactose particles are less than 5 microns in diameter. The compositions provide for a more accurate, uniform and consistent dispersion when used with, for example, a multidose dry powder inhaler. Also disclosed are methods for use of the compositions of the invention.
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