Hema Ravishankar,Shraddha Bodinge,Hans-Ulrich Petereit
申请号：
US12742842
公开号：
US09237760B2
申请日:
2008.02.01
申请国别(地区):
US
年份:
2016
代理人:
摘要：
The present invention relates to a pharmaceutical or nutraceutical preparation comprising a) a core containing a pharmaceutically or nutraceutically active substance and b) an inner controlling layer surrounding the core comprising i) one or a mixture of a plurality of (meth)acrylate copolymers bearing a cationic group or a group that can be converted to a cationic group and ii) one or a mixture of a plurality of polymers or copolymers bearing an anionic group or group that can be converted to an anionic group and c) an outer controlling layer comprising one or a mixture of a plurality of polymers or copolymers bearing an anionic group or group that can be converted to an anionic group and to tablets or capsules comprising same.
