Taste-masked microcapsule compositions and methods of...

A - Human Necessities – 61 – K

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A61K 9/50 (2006.01) A61K 9/58 (2006.01) A61K 9/62 (2006.01) A61K 31/341 (2006.01) A61K 9/00 (2006.01) A61K 9/20 (2006.01)

Patent

CA 2266629

A taste-masked microcapsule composition for administration of a drug is provided. The composition comprises microcapsules of drug and a substantially water-insoluble polymeric material, typically a cellulosic polymer. The microcapsule composition may be incorporated into any number of pharmaceutical formulations, including chewable tablets, effervescent tablets, powders, liquid dispersions, and the like. A method for masking the taste of drugs is also provided, involving a phase separation coacervation technique in which drug is coated with relatively high levels of a polymeric material. These high coating levels give rise to effective taste masking, while nevertheless allowing targeted release of drug, so that the drug is released shortly after passage through the mouth.

Composition en microcapsule à masquage de goût pour l'administration d'un médicament. Plusieurs microcapsules renferment un médicament et une matière polymère sensiblement insoluble dans l'eau, généralement de type polymère cellulosique. Il est possible d'intégrer la composition à un nombre non limité de préparations pharmaceutiques, notamment les comprimés à mâcher, les comprimés effervescents, les poudres, les dispersions liquides et autres. On décrit aussi un procédé relatif au masquage du goût des médicaments, qui repose sur une technique de séparation-coacervation de phase, pour l'enduction d'un médicament avec des niveaux relativement élevés de matière polymère. Ces niveaux élevés d'enduction conduisent à un masquage efficace du goût, sans toutefois nuire à la libération ciblée du médicament, lequel est ainsi libéré peu après son passage dans la cavité buccale.

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