申请人:——
公开号:US20040105821A1
公开(公告)日:2004-06-03
Pharmaceutical formulations and methods are provided for the sustained delivery of a pharmaceutical agent to the lungs of a patient by inhalation. The formulation includes porous microparticles which comprise a pharmaceutical agent and a matrix material, wherein upon inhalation of the formulation a therapeutically or prophylactically effective amount of the pharmaceutical agent is released from the microparticles in the lungs for at least 2 hours. Preferably, a majority of the pharmaceutical agent is released from the microparticles by 24 hours following inhalation, for example where a majority of the pharmaceutical agent is released no earlier than about 2 hours and no later than about 24 hours following inhalation. Methods for delivering a pharmaceutical agent, such as a corticosteroid, to the lungs of a patient are also provided. For example, the method includes having the patient inhale a dry powder blend comprising the present microparticles and a pharmaceutically acceptable bulking agent.
提供了一种药物制剂和方法,通过吸入将药物剂量持续释放到患者的肺部。该制剂包括多孔微粒,其中包括药物剂量和基质材料,吸入该制剂后,肺部至少释放出治疗或预防有效剂量的药物剂量,持续时间至少为2小时。最好,药物剂量的大部分在吸入后的24小时内从微粒中释放出来,例如,药物剂量的大部分在吸入后不早于约2小时,不晚于约24小时内释放。还提供了将药物剂量(例如皮质类固醇)传递到患者肺部的方法。例如,该方法包括让患者吸入包括当前微粒和药用可接受的增容剂的干粉混合物。