Dosage form comprising fast agent delivery followed by slow agent delivery
First Claim
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1. A method for administering a beneficial agent to an animal, said method comprising:
- (a) admitting into the animal dosage form comprising;
(1) a wall comprising at least in part a semipermeable composition permeable to the passage of fluid and substantially impermeable to the passage of beneficial agent the wall surrounding;
(2) a lumen;
(3) a first lamina composition in the lumen, said first lamina composition means for forming a dispensable composition that is delivered from the dosage form in a short period of time;
(4) a second lamina composition in the lumen, said second lamina composition comprising means for forming a dispensable composition that is delivered from the dosage form over a long period of time;
(5) a beneficial agent in each lamina composition;
(6) at least one exit means through the wall connecting the exterior of the dosage form with the lumen, said exit means sized for delivering the first dispensable composition in a short period of time;
(b) imbibing fluid through the wall into each lamina composition at a rate determined by the permeability of the wall to provide fluid means for forming the dispensable composition; and
(c) delivering the dispensable composition through the passageway from the dosage form to the animal for administering the beneficial agent to produce a beneficial result.
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Abstract
A dosage form is disclosed comprising a wall that surrounds a compartment with an exit means in the wall. The compartment comprises a first or fast releasing lamina and a second or short releasing lamina that are delivered through the exit means over two different periods of time.
100 Citations
20 Claims
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1. A method for administering a beneficial agent to an animal, said method comprising:
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(a) admitting into the animal dosage form comprising; (1) a wall comprising at least in part a semipermeable composition permeable to the passage of fluid and substantially impermeable to the passage of beneficial agent the wall surrounding; (2) a lumen; (3) a first lamina composition in the lumen, said first lamina composition means for forming a dispensable composition that is delivered from the dosage form in a short period of time; (4) a second lamina composition in the lumen, said second lamina composition comprising means for forming a dispensable composition that is delivered from the dosage form over a long period of time; (5) a beneficial agent in each lamina composition; (6) at least one exit means through the wall connecting the exterior of the dosage form with the lumen, said exit means sized for delivering the first dispensable composition in a short period of time; (b) imbibing fluid through the wall into each lamina composition at a rate determined by the permeability of the wall to provide fluid means for forming the dispensable composition; and (c) delivering the dispensable composition through the passageway from the dosage form to the animal for administering the beneficial agent to produce a beneficial result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A dosage form for delivering a beneficial agent to an environment of use, wherein the dosage form comprises:
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(a) a wall comprising at least in part a semipermeable composition permeable to the passage of fluid and substantially impermeable to the passage of beneficial agent, which wall surrounds and forms; (b) a compartment; (c) a first lamina composition in the compartment comprising means for delivering a beneficial agent from the dosage form in a short period of time; (d) a second lamina composition in the compartment comprising means for delivering a beneficial agent from the dosage form over a long period of time; (e) a beneficial agent selected from like and unlike beneficial agents in each lamina; and
,(f) at least one exit means in the wall communicating the exterior of the dosage form with the compartment, said exit means shaped and sized for delivering said first dispensable composition in a short period of time, through the exit means to the environment of use. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification