Oral osmotic dosage form having a high flux membrane
First Claim
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1. An oral osmotic dosage form comprising:
- a core that comprises a drug layer;
a semi-permeable membrane surrounding the core; and
at least one exit port through the semi-permeable membrane;
wherein the semi-permeable membrane comprises from about 23 wt % to about 50 wt % of a flux enhancer and from about 0.01 wt % to about 5 wt % of antioxidant, based on the total dry weight of the semi-permeable membrane.
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Abstract
Disclosed are oral osmotic dosage forms and methods wherein a semi-permeable membrane of the oral osmotic dosage form includes from about 23 wt % to about 50 wt % of a flux enhancer and from about 0.01 wt % to about 5 wt % of antioxidant, based on the total dry weight of the semi-permeable membrane. Such compositions provide high flux membranes with improved mechanical and transport stability during storage on the shelf.
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Citations
22 Claims
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1. An oral osmotic dosage form comprising:
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a core that comprises a drug layer;
a semi-permeable membrane surrounding the core; and
at least one exit port through the semi-permeable membrane;
wherein the semi-permeable membrane comprises from about 23 wt % to about 50 wt % of a flux enhancer and from about 0.01 wt % to about 5 wt % of antioxidant, based on the total dry weight of the semi-permeable membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of making an oral osmotic dosage form comprising:
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providing a semi-permeable membrane that comprises from about 23 wt % to about 50 wt % of a flux enhancer and from about 0.01 wt % to about 5 wt % of antioxidant, based on the total dry weight of the semi-permeable membrane;
coating the semi-permeable membrane on a core that comprises a drug layer; and
forming at least one exit port through the semipermeable membrane. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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providing a oral osmotic dosage form that comprises a semi-permeable membrane that comprises from about 23 wt % to about 50 wt % of a flux enhancer and from about 0.01 wt % to about 5 wt % of antioxidant, based on the total dry weight of the semi-permeable membrane; and
administering the oral osmotic dosage form to a patient. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification