Dosage form having first and second coats
First Claim
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1. An extended release dosage form comprising:
- a drug composition that comprises a drug and a pharmaceutically acceptable carrier, a first coat that surrounds the drug composition, wherein the first coat comprising ethyl cellulose and hydroxyalkycellulose;
a second coat that surrounds the first coat, the second coat comprising a composition having at least one of a cellulose acylate, cellulose diacylate or cellulose triacylate wherein the composition is permeable to the passage of fluid and impermeable to the passage of drug; and
an exit passageway in the first and second coats for releasing the drug from the dosage form over an extended time.
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Abstract
A dosage form comprising a composition comprising a drug surrounded by a first coat and a second coat with an exit for administering the drug to a patient; and a method of using the dosage form are disclosed for an indicated therapy.
197 Citations
13 Claims
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1. An extended release dosage form comprising:
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a drug composition that comprises a drug and a pharmaceutically acceptable carrier, a first coat that surrounds the drug composition, wherein the first coat comprising ethyl cellulose and hydroxyalkycellulose;
a second coat that surrounds the first coat, the second coat comprising a composition having at least one of a cellulose acylate, cellulose diacylate or cellulose triacylate wherein the composition is permeable to the passage of fluid and impermeable to the passage of drug; and
an exit passageway in the first and second coats for releasing the drug from the dosage form over an extended time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for providing controlled delivery of a drug to a mammal over an extended time period comprising:
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providing an extended release dosage form comprising a drug composition that comprises a drug and a pharmaceutically acceptable carrier, a first coat that surrounds the drug composition, wherein the first coat comprising ethyl cellulose and hydroxyalkycellulose, a second coat that surrounds the first coat, the second coat comprising a composition having at least one of a cellulose acylate, cellulose diacylate or cellulose triacylate wherein the composition is permeable to the passage of fluid and impermeable to the passage of drug, and an exit passageway in the first and second coats for releasing the drug from the dosage form over an extended time; and
administering to the mammal the extended release dosage form.
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Specification