Extended release formulations of erythromycin derivatives

A - Human Necessities – 61 – K

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A61K 9/22 (2006.01) A61K 9/20 (2006.01)

Patent

CA 2285266

Disclosed is a pharmaceutical composition for extended release of an erythromycin derivative in the gastrointestinal environment. The composition comprises an erythromycin derivative and a pharmaceutically acceptable polymer so that, when ingested orally, the composition induces statistically significantly lower Cmax in the plasma than an immediate release composition of the erythromycin derivative while maintaining bioavailability and minimum concentration substantially equivalent to that of the immediate release composition of the erythromycin derivative upon multiple dosing. The compositions of the invention have an improved taste profile and reduced gastrointestinal side effects as compared to those for the immediate release composition.

L'invention concerne une composition pharmaceutique destinée à la libération prolongée d'un dérivé d'érythromycine dans un environnement gastro-intestinal. La composition comprend un dérivé d'érythromycine et un polymère pharmaceutiquement acceptable de sorte que, lorsqu'elle est administrée par voie orale, la composition fournit un C¿max? dans le plasma statistiquement significatif inférieur à celui d'une composition à libération immédiate du dérivé d'érythromycine tout en maintenant la biodisponibilité et une teneur minimale sensiblement équivalente à celle de la composition à libération immédiate du dérivé d'érythromycine en posologie multiple. Les compositions faisant l'objet de cette invention présentent un profil organoleptique amélioré pour des effets gastro-intestinaux secondaires réduits comparativement avec ceux d'une composition à libération immédiate.

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