Coated pharmaceutical or nutraceutical preparation with...

A - Human Necessities – 23 – L

Patent

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Details

A23L 1/00 (2006.01) A61K 9/28 (2006.01) A61K 9/48 (2006.01) A61K 9/50 (2006.01) A61K 47/34 (2006.01)

Patent

CA 2711473

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.

L'invention porte sur une préparation pharmaceutique ou nutraceutique qui comprend: a) un noyau contenant une substance pharmaceutiquement ou nutraceutiquement active; et b) une couche de régulation interne qui entoure le noyau et qui comprend: i) un copolymère méthacrylate ou un mélange d'une pluralité de copolymères méthacrylates portant un groupe cationique ou un groupe pouvant être converti en groupe cationique; et ii) un polymère ou copolymère ou un mélange d'une pluralité de polymères ou de copolymères portant un groupe anionique ou un groupe pouvant être converti en un groupe anionique; et c) une couche de régulation externe comprenant un polymère ou un copolymère ou un mélange d'une pluralité de polymères ou copolymères portant un groupe anionique ou un groupe pouvant être converti en groupe anionique. L'invention concerne également des comprimés et des capsules renfermant ladite préparation.

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