Delivery of rizatriptan and zolmitriptan through an inhalation route
First Claim
1. A composition for delivery of rizatriptan or zolmitriptan comprising a condensation aerosola) formed by volatilizing rizatriptan or zolmitriptan under conditions effective to produce a heated vapor of the rizatriptan or zolmitriptan and condensing the heated vapor of the rizatriptan or zolmitriptan to form condensation aerosol particles, b) wherein said condensation aerosol particles are characterized by less than 5% rizatriptan or zolmitriptan degradation products, and c) wherein the aerosol MMAD is less than 3 microns.
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Accused Products
Abstract
The present invention relates to the delivery of rizatriptan or zolmitriptan through an inhalation route. Specifically, it relates to aerosols containing rizatriptan or zolmitriptan that are used in inhalation therapy. In a composition aspect of the present invention, the aerosol comprises particles comprising at least 5 percent by weight of rizatriptan or zolmitriptan. In a method aspect of the present invention, either rizatriptan or zolmitriptan is delivered to a mammal through an inhalation route. The method comprises: a) heating a composition, wherein the composition comprises at least 5 percent by weight of rizatriptan or zolmitriptan, to form a vapor; and, b) allowing the vapor to cool, thereby forming a condensation aerosol comprising particles, which is inhaled by the mammal. In a kit aspect of the present invention, a kit for delivering rizatriptan or zolmitriptan through an inhalation route to a mammal is provided which comprises: a) a composition comprising at least 5 percent by weight of rizatriptan or zolmitriptan; and, b) a device that forms a rizatriptan or zolmitriptan containing aerosol from the composition, for inhalation by the mammal.
94 Citations
14 Claims
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1. A composition for delivery of rizatriptan or zolmitriptan comprising a condensation aerosol
a) formed by volatilizing rizatriptan or zolmitriptan under conditions effective to produce a heated vapor of the rizatriptan or zolmitriptan and condensing the heated vapor of the rizatriptan or zolmitriptan to form condensation aerosol particles, b) wherein said condensation aerosol particles are characterized by less than 5% rizatriptan or zolmitriptan degradation products, and c) wherein the aerosol MMAD is less than 3 microns.
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7. A method of producing rizatriptan or zolmitriptan in an aerosol form comprising:
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a) volatilizing rizatriptan or zolmitriptan under conditions effective to produce a heated vapor of rizatriptan or zolmitriptan, and b) during said volatilizing, passing air through the heated vapor to produce aerosol particles of rizatriptan or zolmitriptan comprising less than 5% rizatriptan or zolmitriptan degradation products and an aerosol having an MMAD less than 3 μ
m.- View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification