Tocopherol-based pharmaceutical systems
    4.
    发明授权
    Tocopherol-based pharmaceutical systems 失效
    基于生育酚的制药系统

    公开(公告)号:US5364631A

    公开(公告)日:1994-11-15

    申请号:US18913

    申请日:1993-02-17

    IPC分类号: A61K9/127 A61K31/415

    摘要: A method for making a pharmaceutical composition is described. The composition is comprised of an organic acid derivative of alpha tocopherol, and may additionally comprise other lipids. The composition may be in the form of liposomes, and as such are associated with or entrap a bioactive agent. Particularly suited for such systems are drugs stable at acidic pH, for example drugs having imidazole groups, such as pilocarpine. The composition requires a stabilizer to maintain the bilayer phase of the organic acid derivative of alpha tocopherol in a low pH environment. Such a stabilizer is for example a detergent. Upon in vivo administration of the system and concomitant increase of pH, viscosity of the preparation increases.

    摘要翻译: 描述制备药物组合物的方法。 组合物由α-生育酚的有机酸衍生物组成,并且还可以包含其它脂质。 组合物可以是脂质体的形式,因此与生物活性剂相关联或截留生物活性剂。 特别适用于这种系统是在酸性pH下稳定的药物,例如具有咪唑基团的药物,如毛果芸香碱。 该组合物需要稳定剂以在低pH环境中维持α-生育酚的有机酸衍生物的双相。 这种稳定剂是例如洗涤剂。 在系统的体内给药和伴随pH的增加时,制剂的粘度增加。