Sulfoalkyl ether cyclodextrin based controlled release solid pharmaceutical formulations
First Claim
1. A controlled release solid pharmaceutical formulation consisting of a core comprising a first composition comprising a physical mixture of:
- a therapeutic agent;
at least one sulfoalkyl ether cyclodextrin; and
at least one release rate modifier;
wherein,a major portion of the therapeutic agent is not complexed with the sulfoalkyl ether cyclodextrin; and
the therapeutic agent of the first composition is released from the core at a controlled rate in the absence of a release rate modifying coat surrounding the core.
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Accused Products
Abstract
Sulfoalkyl ether cyclodextrin (SAE-CD) based controlled release pharmaceutical formulations are provided by the present invention. The present solid pharmaceutical formulations consist of a core comprising a physical mixture of one or more SAE-CD derivatives, an optional release rate modifier, a therapeutic agent, a major portion of which is not complexed to the SAE-CD, and an optional release rate modifying coating surrounding the core. The present formulations are advantageously easier to prepare than other SAE-CD based formulations in the art yet provide similar or improved effectiveness. The SAE-CD derivative is used to modify the bioavailability and/or rate of bioabsorption of therapeutic agents. Multi-layered, osmotic pump, coated, and uncoated tablet, minitablet, pellet, micropellet, particle, powder, and granule dosage forms are disclosed herein.
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Citations
95 Claims
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1. A controlled release solid pharmaceutical formulation consisting of a core comprising a first composition comprising a physical mixture of:
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a therapeutic agent; at least one sulfoalkyl ether cyclodextrin; and at least one release rate modifier; wherein, a major portion of the therapeutic agent is not complexed with the sulfoalkyl ether cyclodextrin; and the therapeutic agent of the first composition is released from the core at a controlled rate in the absence of a release rate modifying coat surrounding the core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 48, 49, 94)
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17. A controlled release solid pharmaceutical formulation comprising:
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a core comprising a first composition comprising a physical mixture of a therapeutic agent and at least one sulfoalkyl ether cyclodextrin, wherein a major portion of the therapeutic agent is not complexed with the sulfoalkyl ether cyclodextrin; and a coating surrounding said core and consisting of a film forming agent; wherein, said therapeutic agent of the first composition is released from the core at a controlled rate in the absence of a pore forming agent in the coating. - View Dependent Claims (18, 19, 20, 21, 22, 50, 51, 78, 79, 80, 81)
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23. A multi-layered controlled release solid pharmaceutical formulation comprising:
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at least one first layer comprising a physical mixture of a therapeutic agent and a sulfoalkyl ether cyclodextrin; and at least one second layer comprising a release rate modifier; wherein, said first and second layers are juxtaposed; said therapeutic agent is released from said core at a controlled rate; and a major portion of said therapeutic agent is not complexed with said sulfoalkyl ether cyclodextrin. - View Dependent Claims (24, 25, 26, 27, 28, 52, 53)
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29. A multi-layered combined rapid and controlled release solid pharmaceutical formulation comprising:
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at least one controlled release first layer comprising a physical mixture of a first therapeutic agent, a release rate modifier and a sulfoalkyl ether cyclodextrin for releasing said first therapeutic agent at a controlled rate into a first environment of use; and at least one rapid release second layer comprising a preformed complex of a second therapeutic agent and a sulfoalkyl ether cyclodextrin for releasing said second therapeutic agent rapidly into a second environment of use; wherein, said first and second layers are juxtaposed; a major portion of said first therapeutic agent is not complexed with said sulfoalkyl ether cyclodextrin. - View Dependent Claims (30, 31, 32, 33, 54, 55, 82, 83, 84, 85, 86, 87)
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34. A multi-layered combined rapid and controlled release solid pharmaceutical formulation comprising:
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at least one controlled release first layer comprising a physical mixture of a first therapeutic agent, a release rate modifier and a sulfoalkyl ether cyclodextrin for releasing said first therapeutic agent at a controlled rate into a first environment of use; and at least one rapid release second layer comprising a physical mixture of a second therapeutic agent and a sulfoalkyl ether cyclodextrin for releasing said second therapeutic agent rapidly into a second environment of use; wherein, said first and second layers are juxtaposed; and major portions of each of said first and second therapeutic agents are not complexed with said sulfoalkyl ether cyclodextrin. - View Dependent Claims (35, 36, 37, 38, 39, 56, 57, 88, 89, 90, 91, 92, 93)
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40. An osmotic solid pharmaceutical formulation for the controlled diffusional and osmotic delivery of a therapeutic agent to an environment of use comprising:
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a core comprising a physical mixture of a sulfoalkyl ether cyclodextrin, a therapeutic agent and a pharmaceutically acceptable carrier; and a membrane surrounding said core and comprising a film forming agent and a pore forming agent, said membrane having a passageway therethrough for communicating said core to an environment of use; wherein, a first portion of said therapeuic agent diffuses through said membrane and a second portion of said therapeutic agent passes through said passageway; and a major portion of said therapeutic agent is not complexed with said sulfoalkyl ether cyclodextrin. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47)
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58. A combination rapid and controlled release solid pharmaceutical formulation comprising a physical mixture of:
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a first group of particles comprising a physical mixture of a first therapeutic agent, a release rate modifier and a sulfoalkyl ether cyclodextrin for releasing said first therapeutic agent at a controlled rate into a first environment of use; and a second group of particles comprising an inclusion complex of a second therapeutic agent and a sulfoalkyl ether cyclodextrin for releasing said second therapeutic agent rapidly into a second environment of use. - View Dependent Claims (59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 95)
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Specification