Drugs, especially low aqueous solubility drugs, are provided in a porous matrix form, preferably microparticles, which enhances dissolution of the drug in aqueous media. The drug matrices preferably are made using a process that includes (i) dissolving a drug, preferably a drug having low aqueous solubility, 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 hydrophilic or hydrophobic excipients that stabilize the drug and inhibit crystallization, and (iii) removing the volatile solvent and pore forming agent from the emulsion, suspension, or second solution to yield the porous matrix of drug. Hydrophobic or hydrophilic excipients may be selected to stabilize the drug in crystalline form by inhibiting crystal growth or to stabilize the drug in amorphous form by preventing crystallization. The pore forming agent can be either a volatile liquid that is immiscible with the drug solvent or a volatile solid compound, preferably a volatile salt. In a preferred embodiment, spray drying is used to remove the solvents and the pore forming agent. 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. In a preferred embodiment, microparticles of the porous drug matrix are reconstituted with an aqueous medium and administered parenterally, or processed using standard techniques into tablets or capsules for oral administration.
药物，特别是低
水溶性药物，以多孔性矩阵形式提供，最好是微粒，这可以增强药物在
水性介质中的溶解。药物矩阵最好是使用包括以下步骤的过程制备的：(i)将药物，最好是低
水溶性药物，溶解在挥发性溶剂中形成药物溶液，(ii)将至少一种孔形成剂与药物溶液结合形成乳液、悬浮液或第二溶液和亲
水或疏
水的赋形剂，以稳定药物并抑制结晶，(iii)从乳液、悬浮液或第二溶液中除去挥发性溶剂和孔形成剂，以得到多孔性的药物矩阵。亲
水或疏
水的赋形剂可以被选择用于通过抑制晶体生长来稳定药物的晶体形式，或者用于通过防止结晶来稳定药物的非晶形式。孔形成剂可以是与药物溶剂不相溶的挥发性液体或挥发性固体化合物，最好是挥发性盐。在一个优选实施例中，喷雾干燥用于除去溶剂和孔形成剂。所得到的多孔性矩阵在给患者治疗后具有更快的溶解速率，与非多孔性药物矩阵形式相比。在一个优选实施例中，多孔性药物矩阵的微粒被
重组与
水性介质，并通过标准技术处理成口服片剂或胶囊剂进行口服给药。
