| 摘要 |
Celecoxib is provided in a porous matrix form wherein the dissolution rate of the drug is enhanced when the matrix is contacted with an aqueous medium. The porous matrix yields upon contact with an aqueous medium nanoparticles and microparticles of celecoxib having a mean diameter between about 0.01 and 5 mum and a total surface area greater than about 0.5 m2/mL. The dry porous matrix preferably is in a dry powder form having a TAP density less than or equal to 1.0 g/mL. The porous celecoxib matrices preferably are made using a process that includes (i) dissolving celecoxib in a volatile solvent to form a drug solution, (ii) combining at least one pore forming agent with the drug solution to form an emulsion, suspension, or second solution, and (iii) removing the volatile solvent and pore forming agent from the emulsion, suspension, or second solution to yield the dry porous matrix of celecoxib. The resulting porous matrix has a faster rate of dissolution following administration to a patient, as compared to non-porous matrix forms of the drug.
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