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专利详细信息
专利号
CN103565769A
专利标题 A kind of nifedipine controlled-release composition and method of making the same
专利权人
发明人
申请号 CN20121249011
申请日 2012/7/18
公开日 2014/2/12
优先权号
IPC A61K00924000;
专利类型
法律状态查询 查看法律状态


The present invention relates to a kind of Nifedipine controlled-release compositions Nifedipine controlled-release compositions is comprised of double-deck label and semipermeable membrane controlled release coat double-deck label is comprised of medicated layer and boosting layer and compositions medicated layer is used aqueous suspension granulation boosting layer to use aqueous solution to granulate.The double-deck label of described compositions is not used coloring agent and coating membrane is prepared with coating solution spray pattern.The invention still further relates to a kind of preparation method of Nifedipine controlled-release tablet comprise medicated layer granulation the granulation of boosting layer double-deck label preparation coating and laser boring.Nifedipine controlled-release composition grain prepared by the present invention is evenly distributed tabletting in flakes effective content is even organic solvent residual rate is low result of extraction is good preparation method is simple is conducive to industrial applications.
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