Process for the preparation of sustained release pharmaceutical
compositions having a high active ingredient content
    1.
    发明授权
    Process for the preparation of sustained release pharmaceutical compositions having a high active ingredient content 失效
    制备具有高活性成分含量的缓释药物组合物的方法

    公开(公告)号:US4748023A

    公开(公告)日:1988-05-31

    申请号:US644835

    申请日:1984-08-27

    CPC分类号: A61K9/2081

    摘要: The invention relates to a process for the preparation of sustained release solid pharmaceutical compositions having an active ingredient content of at least 80% and possessing a structure which loosens in aqueous medium but does not disintegrate to discrete particles within 4 hours which comprises coating the particles of the active ingredient in a liquid medium with a water insoluble polymer--preferably with an ethyl cellulose polymer film--and thereafter admixing the coated crystals with at least one disintegrating agent being capable of swelling in aqueous medium and other auxiliary agents conventionally used in pharmaceutical industry and pressing the mixture into tablets.The advantage of the process of the present invention is that it is readily feasible with a very wide range of active ingredients and provides sustained release tablets having a high active ingredient content.

    摘要翻译: PCT No.PCT / HU84 / 00006 Sec。 371日期1984年8月27日第 102(e)日期1984年8月27日PCT提交1984年1月25日PCT公布。 公开号WO84 / 02843 日本1984年8月2日。本发明涉及一种制备持续释放固体药物组合物的方法,其具有至少80%的活性成分含量,并且具有在水性介质中松动但不分解成4分内的离散颗粒的结构 其包括用水不溶性聚合物 - 优选与乙基纤维素聚合物膜在液体介质中涂覆活性成分的颗粒,然后将涂覆的晶体与至少一种能够在水性介质和其它助剂中溶胀的崩解剂混合 通常用于制药工业的药物并将混合物压制成片剂。 本发明方法的优点在于,使用非常宽范围的活性成分是容易可行的,并提供具有高活性成分含量的缓释片剂。