Pelletized pharmaceutical composition
First Claim
1. A pelletized sustained release pharmaceutical composition comprisinga core element comprisingapproximately 0.1 to 95% weight, based on the total weight of the core element of an active ingredient of low aqueous solubility,approximately 0.1 to 55% by weight weight binding agent;
- approximately 5 to 99% weight of a core seed; and
a core coating for the core element, comprisingapproximately 30 to 97% by weight, based on the total weight of the core coating, excluding filler, of an enteric polymer;
approximately 3 to 50% by weight of an insoluble polymer; and
0 to approximately 50% by weight of plasticizer, the enteric polymer comprising at least approximately 70% by weight of the total weight of the enteric polymer and insoluble polymer;
the core coating being such that the active ingredient is released in a controlled fashion over an extended period in the intestine but substantially no release occurs in the acid environment of the stomach and blood levels of active ingredient are maintained within the therapeutic range over an extended period of time.
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Abstract
A pelletized sustained release pharmaceutical composition including a core element including approximately 0.1 to 95% by weight, based on the total weight of the core element, of an active ingredient of low aqueous solubility; approximately 0.1 to 55% by weight of a core seed; and a core coating for the core element, including approximately 30 to 97% by weight, based on the total weight of the core coating, excluding filler, of an enteric polymer; approximately 3 to 50% by weight of an insoluble polymer; and 0 to approximately 50% by weight of plasticizer, the enteric polymer comprising at least approximately 70% by weight of the total weight of the enteric polymer and insoluble polymer; the core coating being such that the active ingredient is released in a controlled fashion over an extended period in the intestine but substantially no release occurs in the acid environment of the stomach and blood levels of active ingredient are maintained within the therapeutic range over an extended period of time.
96 Citations
14 Claims
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1. A pelletized sustained release pharmaceutical composition comprising
a core element comprising approximately 0.1 to 95% weight, based on the total weight of the core element of an active ingredient of low aqueous solubility, approximately 0.1 to 55% by weight weight binding agent; -
approximately 5 to 99% weight of a core seed; and a core coating for the core element, comprising approximately 30 to 97% by weight, based on the total weight of the core coating, excluding filler, of an enteric polymer; approximately 3 to 50% by weight of an insoluble polymer; and 0 to approximately 50% by weight of plasticizer, the enteric polymer comprising at least approximately 70% by weight of the total weight of the enteric polymer and insoluble polymer; the core coating being such that the active ingredient is released in a controlled fashion over an extended period in the intestine but substantially no release occurs in the acid environment of the stomach and blood levels of active ingredient are maintained within the therapeutic range over an extended period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for preparing a pelletized sustained release pharmaceutical composition, which method comprises providing
a core element comprising approximately 0.1 to 95% weight, based on the total weight of the core element of an active ingredient of low aqueous solubility, approximately 0.1 to 55% by weight of a binding agent; -
approximately 5 to 99% weight of a core seed; and a core coating for the core element, including approximately 30 to 97% by weight, based on the total weight of the core coating, excluding filler, of an enteric polymer; approximately 3 to 50% by weight of an insoluble polymer, the enteric polymer comprising at least approximately 70% by weight of the total weight of the enteric polymer and insoluble polymer; and spraying the core coating composition onto the core element. - View Dependent Claims (11, 12)
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13. A method for the therapeutic or prophylactic treatment of conditions in patients requiring treatment, which method includes administering to a patient an effective amount of a pelletized sustained release pharmaceutical composition comprising
a core element comprising approximately 0.1 to 95% weight, based on the total weight of the core element of an active ingredient of low aqueous solubility selected from diclofenac, ketorolac and indomethacin, approximately 0.1 to 55% by weight weight binding agent; -
approximately 5 to 99% weight of a core seed; and a core coating for the core element, including approximately 30 to 97% by weight, based on the total weight of the core coating, excluding filler, of an enteric polymer; approximately 3 to 50% by weight of an insoluble matrix polymer; and 0 to approximately 50% by weight of plasticizer, the enteric polymer comprising at least approximately 70% by weight of the total weight of the enteric polymer and insoluble matrix polymer; the core coating being such that the active ingredient is released in a controlled fashion over an extended period in the intestine but substantially no release occurs in the acid environment of the stomach and blood levels of active ingredient are maintained within the therapeutic range over an extended period of time.
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14. A sustained release pharmaceutical composition comprising pellets from about 0.5 mm to about 2 mm in size which include:
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a core element comprising, based on the total weight of the core element; about 0.1 to 95% weight of an active ingredient of low aqueous solubility; about 0.1 to 55% by weight of a binding agent; about 5 to 99% weight of a core seed; and a core coating for the core element, based on the total weight of the core coating, excluding filler, comprising; about 3 to 50% by weight of an insoluble polymer about 30 to 97% by weight of an enteric polymer, the enteric polymer comprising at least about 70% by weight of the total weight of the enteric polymer and insoluble polymer; and up to about 50% by weight of plasticizer; wherein the core coating is such that the active ingredient is released in a controlled fashion in the intestine so that the blood level of the active ingredient is maintained within a therapeutically effective range over an extended period and is not substantially released in the stomach.
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Specification