Sustained release, bilayer buoyant dosage form
    3.
    发明授权
    Sustained release, bilayer buoyant dosage form 失效
    持续释放,双层浮力剂型

    公开(公告)号:US5232704A

    公开(公告)日:1993-08-03

    申请号:US629918

    申请日:1990-12-19

    IPC分类号: A61K9/00 A61K9/52

    CPC分类号: A61K9/0065

    摘要: Disclosed is a sustained release pharmaceutical dosage form including a drug and adapted to release the drug over an extended period of time. The dosage form comprises a capsule including a non-compressed bi-layer formulation; one layer comprising a drug release layer and the other a buoyant or floating layer, the pharmaceutical dosage form providing extended gastric residence time of the bi-layer formulation so that substantially all of the drug is released in the stomach over an extended period. The dosage form has a large diameter in relation to its size and an initial density of less than 1. The floating layer of the described pharmaceutical dosage form is formulated to provide buoyancy to the dosage form and diametral increase, the floating layer including a polymer which has the properties of a gelling agent and which upon contact with gastric fluid hydrates and forms a gelatinous barrier. The pharmaceutical dosage form is buoyant in gastric fluid for a period up to about 13 hours.

    摘要翻译: 公开了一种持续释放的药物剂型,其包括药物并适于在长时间内释放药物。 剂型包括一种包含非压缩双层制剂的胶囊; 一层,其包含药物释放层,另一层包含浮力或漂浮层,所述药物剂型提供双层制剂的延长的胃停留时间,使得基本上所有的药物在胃中长时间释放。 剂型具有相对于其尺寸的大直径和小于1的初始密度。所述药物剂型的漂浮层被配制成为剂型提供浮力和直径增加,浮动层包括聚合物, 具有胶凝剂的性质,并且在与胃液接触时形成凝胶状屏障。 药物剂型在胃液中浮游达约13小时。