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Pharmaceutical or nutraceutical preparations comprising a core containing an active substance, an inner layer surrounding the core and an outer layer, a tablet, a gelatin or hpmc capsule comprising them and preparation thereof
Pharmaceutical or nutraceutical preparations comprising a core containing an active substance, an inner layer surrounding the core and an outer layer, a tablet, a gelatin or hpmc capsule comprising them and preparation thereof
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.
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