Pharmaceutical formulations for sustained release
First Claim
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1. A pharmaceutical composition comprising a solid ionic complex, said complex comprising a pharmaceutically active compound and an ionic macromolecule.
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Abstract
Sustained delivery pharmaceutical compositions comprising a solid ionic complex of a pharmaceutically active compound and an ionic macromolecule are provided by the present invention. The pharmaceutical compositions of the invention allow for loading of high concentrations of pharmaceutically active compounds and for delivery of a pharmaceutically active compound for prolonged periods of time, e.g., one month, after administration. Methods for preparing these pharmaceutical compositions, as well as methods of using them to treat a subject are also provided.
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Citations
39 Claims
- 1. A pharmaceutical composition comprising a solid ionic complex, said complex comprising a pharmaceutically active compound and an ionic macromolecule.
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32. A method for preparing a pharmaceutical formulation, comprising:
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providing a pharmaceutically active compound and an ionic macromolecule;
combining the pharmaceutically active compound and the ionic macromolecule under conditions such that a solid ionic complex of the pharmaceutically active compound and the ionic macromolecule forms; and
preparing a pharmaceutical formulation comprising the solid ionic complex. - View Dependent Claims (33, 34, 35, 36, 37)
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38. A method for identifying a pharmaceutically active compound which can form an insoluble complex with an ionic polymer, the method comprising:
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(1) providing a multiplicity of solutions, each of said solutions comprising a pharmaceutically active compound;
(2) contacting the solutions of step (1) with an ionic polymer to produce a mixture comprising a pharmaceutically active compound and an ionic polymer; and
(3) determining the turbidity of the mixture of step (2), thereby identifying a pharmaceutically active compound which can form an insoluble complex with an ionic polymer.
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39. A method for selecting an ionic polymer capable of forming an insoluble complex with a pharmaceutically active compound, the method comprising:
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(1) providing a solution comprising the pharmaceutically active compound;
(2) providing n distinct solutions, where n is an integer of two or greater, each of said n distinct solutions comprising an ionic polymer;
(3) contacting each of n aliquots of the solution comprising the pharmaceutically active compound with one of the solutions comprising an ionic polymer, thereby forming n mixtures comprising a pharmaceutically active compound and an ionic polymer; and
(4) determining the turbidity of each mixture of step (3), thereby selecting an ionic polymer capable of forming an insoluble complex with a pharmaceutically active compound.
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Specification