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    • 1. 发明申请
    • PHARMACEUTICAL COMPOSITIONS AND FORMULATIONS OF METFORMIN EXTENDED RELEASE TABLETS
    • 金属蛋白酶扩展片剂的药物组合物和配方
    • US20070275061A1
    • 2007-11-29
    • US11534359
    • 2006-09-22
    • Young Gwan JoJa-Seong KooJu-Bin YimYoon-Sik Jun
    • Young Gwan JoJa-Seong KooJu-Bin YimYoon-Sik Jun
    • A61K9/22A61K31/155
    • A61K31/155A61K9/2027A61K9/2054
    • The present invention relates to a metformin extended release tablet, particularly to a metformin extended release tablet comprising metformin, which is effective in treating non-insulin dependent diabetes mellitus, as active ingredient, and a matrix in which hydrophilic polymers and hydrophobic materials are mixed at a specific proportion. The hydrophilic polymers enable controlling of the pore size of the gel layer formed by water swelling, thereby enabling primary control of drug release rate. And, the hydrophobic materials block the pores of the gel layer, thereby enabling secondary control of drug release rate. Therefore, the metformin extended release tablet of the present invention has better dissolution properties than conventional extended release tablets and, thus, enables extended drug release at constant rate even with less matrix. A constant blood level can be maintained with one administration a day and the tablet can be made smaller, which makes the administration easier and the production simpler.
    • 本发明涉及二甲双胍延长释放片剂,特别涉及二甲双胍延长释放片剂,其包含二甲双胍,其有效治疗作为活性成分的非胰岛素依赖性糖尿病,和将亲水性聚合物和疏水性材料混合在其中的基质 具体比例。 亲水性聚合物能够控制由水溶胀形成的凝胶层的孔径,从而能够初步控制药物释放速率。 并且,疏水材料阻挡凝胶层的孔,从而能够二次控制药物释放速率。 因此,本发明的二甲双胍延长释放片剂比常规延长释放片剂具有更好的溶解性能,因此即使使用较少的基质也能以恒定的速率延长药物释放。 可以每天一次给药维持恒定的血液水平,并且可以使片剂更小,这使得给药更容易并且生产更简单。