Inhalant formulation containing sulfoalkyl ether cyclodextrin and corticosteroid prepared from a unit dose suspension
First Claim
1. A method of improving the administration of an inhalable corticosteroid-containing suspension-based unit dose formulation to a subject by nebulization, the method comprising the steps of:
- providing in a unit dose an aqueous suspension formulation comprising water and corticosteroid suspended therein;
combining the suspension with an amount of SAE-CD sufficient to and for a period of time sufficient to increase the amount of solubilized corticosteroid in the formulation to form an altered formulation; and
administering the altered formulation to the subject.
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Accused Products
Abstract
An inhalable unit dose liquid formulation containing SAE-CD and corticosteroid is provided. The formulation is adapted for administration to a subject by nebulization with any known nebulizer. The formulation can be included in a kit. The formulation is administered as an aqueous solution or concentrated composition. The formulation is employed in an improved nebulization system for administering corticosteroid by inhalation. SAE-CD present in the formulation significantly enhances the chemical stability of corticosteroid, such as budesonide. A method of administering the formulation by inhalation is provided. The formulation can also be administered by conventional nasal delivery apparatus. The formulation is prepared by mixing SAE-CD, in solid or liquid (dissolved) form, with an inhalable suspension-based unit dose formulation.
239 Citations
33 Claims
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1. A method of improving the administration of an inhalable corticosteroid-containing suspension-based unit dose formulation to a subject by nebulization, the method comprising the steps of:
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providing in a unit dose an aqueous suspension formulation comprising water and corticosteroid suspended therein;
combining the suspension with an amount of SAE-CD sufficient to and for a period of time sufficient to increase the amount of solubilized corticosteroid in the formulation to form an altered formulation; and
administering the altered formulation to the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 33)
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19. A method of preparing a nebulizable corticosteroid-containing liquid unit dose formulation comprising the steps of:
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providing a suspension-based unit dose formulation comprising an aqueous liquid carrier and a corticosteroid suspended therein, wherein the corticosteroid is present at a concentration of about 20 mcg to about 30 mg of corticosteroid per ml of suspension; and
mixing SAE-CD with the suspension-based unit dose formulation to form a nebulizable liquid unit dose formulation, wherein the SAE-CD is present in an amount sufficient to solubilize at least a major portion of the corticosteroid. - View Dependent Claims (20, 21)
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22. A kit adapted for the preparation of an inhalable unit dose liquid formulation, the kit comprising:
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a first composition comprising a suspension-based unit dose formulation comprising corticosteroid suspended within an aqueous carrier; and
a separate second composition comprising SAE-CD, wherein the SAE-CD is present in an amount sufficient to increase the amount of dissolved corticosteroid when the first and second compositions are mixed;
wherein the first and/or second composition optionally comprises one or more other components. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification