Abuse-resistant pharmaceutical compositions

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/00 (2006.01) A61K 9/52 (2006.01) A61K 47/44 (2006.01)

Patent

CA 2499994

An abuse-resistant controlled release pharmaceutical composition comprising a pharmaceutically effective amount of discrete particles of an active capable of abuse, wherein surfaces of said particles are wetted with a water insoluble coating material, and preferably wherein said composition comprises a matrix, in which said particles are distributed, and which renders the abuse-capable compound within the matrix difficult to separate from the matrix; and a method for the preparation of a controlled release pharmaceutical composition having a reduced potential for abuse, comprising applying a pressure force to a mixture comprising a water insoluble material, and particles of a pharmaceutically active compound capable of inducing in a subject a reaction that is physiologically or psychologically detrimental if administered in an immediate release dosage form, thereby resulting in surface coated particles; and incorporating said surface coated particles into a pharmaceutical composition.

L'invention concerne une composition pharmaceutique à libération contrôlée n'induisant pas l'abus, qui comprend une quantité pharmaceutiquement efficace de particules discrètes de principe actif pouvant induire l'abus. On mouille des surfaces de ces particules avec un matériau de revêtement insoluble dans l'eau. De préférence, la composition comprend une matrice à distribution de particules, rendant le composé qui peut induire l'abus, dans la matrice, difficile à séparer de la matrice. L'invention concerne également un procédé d'élaboration correspondant, pour une composition résultante à potentiel d'abus réduit, qui consiste à appliquer une force de pression à un mélange comprenant un matériau insoluble dans l'eau, et des particules de composé pharmaceutiquement actif capable d'induire chez un sujet une réaction physiologiquement ou psychologiquement préjudiciable s'il s'agit d'une administration sous forme pharmaceutique à libération immédiate, et donnant des particules à revêtement de surface, puis à incorporer les particules dans une composition pharmaceutique.

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