申请人:——
公开号:US20030152622A1
公开(公告)日:2003-08-14
An erodible, gastric-retentive oral diuretic is provided that is formulated using the in vitro drug release profile obtained with USP Disintegration test equipment rather the USP Dissolution Apparatus. The invention is premised on the discovery that the USP Disintegration Test and modified versions thereof are far more predictive of the in vivo release profile for a controlled release dosage form than is the standard USP Dissolution Test, particularly controlled release dosage forms of the swellable, erodible type. The dosage forms generally comprise particles of a biocompatible, hydrophilic polymer having the active agent incorporated therein, wherein the particles are optionally but preferably compacted into a tablet or loaded into a capsule. The dosage forms can be used to deliver water-insoluble or sparingly soluble drugs as well as water-soluble drugs, providing that the latter are coated with a protective coating or contained in a protective vesicle. Using the controlled release dosage form, adverse side effects associated with peak diuresis are diminished or eliminated, while the overall diuretic effect of the drug is maintained.
提供了一种可侵蚀、胃内停留的口服利尿剂,其配方使用了通过美国药典溶解试验设备获得的体外药物释放特性,而不是使用美国药典溶出仪。该发明基于发现,美国药典溶解试验及其修改版本远比标准的美国药典溶出试验更具预测性,特别是对于可膨胀、可侵蚀类型的控释剂型的体内释放特性。这些剂型通常包括含有活性成分的生物相容性、亲水性聚合物颗粒,其中这些颗粒可以选择性地但最好是被压制成片剂或装入胶囊中。这些剂型可用于输送水不溶性或难溶性药物以及水溶性药物,只要后者被覆盖有保护层或包含在保护泡囊中。使用控释剂型,可以减轻或消除与高峰利尿相关的不良副作用,同时保持药物的整体利尿效果。