MODIFIED RELEASE FORMULATIONS OF A BUPROPION SALT
First Claim
Patent Images
1. A pharmaceutical composition, comprising:
- at least one microparticle comprising at least one core which is surrounded by at least one osmotic subcoat, and at least one control-releasing coat which surrounds the at least one osmotic subcoat, wherein said at least one core comprises bupropion hydrobromide and at least one excipient, and said at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle.
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Accused Products
Abstract
The present invention relates to pharmaceutical compositions, formulations and medicaments comprising a bupropion salt, in particular, modified-release tablets comprising an effective amount of bupropion hydrobromide, and the use of the bupropion salt to prepare a medicament to treat a condition.
8 Citations
20 Claims
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1. A pharmaceutical composition, comprising:
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at least one microparticle comprising at least one core which is surrounded by at least one osmotic subcoat, and at least one control-releasing coat which surrounds the at least one osmotic subcoat, wherein said at least one core comprises bupropion hydrobromide and at least one excipient, and said at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for controlling the rate and/or extent of release of bupropion hydrobromide from a composition, into an external environment of use, the composition comprising
at least one microparticle comprising at least one core which is surrounded by at least one osmotic subcoat, and at least one control-releasing coat which surrounds the at least one osmotic subcoat, wherein said at least one core comprises bupropion hydrobromide and at least one excipient, and said at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle, wherein the method comprises at least one of the following: -
controlling the amount of the at least one osmotic agent in the at least one osmotic subcoat, and controlling the thickness of the at least one control-releasing coat, thereby controlling the release rate of the bupropion hydrobromide from the core of the microparticle into the external environment of use, wherein the external environment of use is a dissolution medium.
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19. A method of administering bupropion hydrobromide, the method comprising:
- administering to a subject in need thereof a pharmaceutical composition, comprising;
at least one microparticle comprising at least one core which is surrounded by at least one osmotic subcoat, and at least one control-releasing coat which surrounds the at least one osmotic subcoat, whereinsaid at least one core comprises bupropion hydrobromide and at least one excipient, and said at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle.
- administering to a subject in need thereof a pharmaceutical composition, comprising;
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20. A pharmaceutical composition, comprising
at least one core which is surrounded by at least one osmotic subcoat, at least one control-releasing coat which surrounds the at least one osmotic subcoat, wherein the at least one core comprises bupropion hydrobromide and at least one excipient, wherein the at least one osmotic subcoat comprises at least one osmotic agent and at least one osmotic deposition vehicle, and a means for releasing the bupropion hydrobromide from the composition.
Specification