24-hour extended-release metoclopramide

A - Human Necessities – 61 – K

Patent

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Details

A61K 31/166 (2006.01)

Patent

CA 2757023

The present invention consists of an extended-release metoclopramide hydrochloride pharmaceutical composition, in 30 mg drug substance 5 tablets, for use in gastrointestinal disorders. The formulation is mainly composed of a hydrophilic polymer, a hydrophobic polymer, a hydrophilic component and metoclopramide hydrochloride. The hydrophilic polymer is swollen by hydration when contacting water, forming a gel coat which controls drug substance release. The water inside the matrix dissolves the drug substance and this is diffused outside through the gel coat. The hydrophobic polymer shows plastic deformation properties under compression, tending to surround the drug substance particles reducing the pore quantity and dimensions in the matrix structure, delaying as a consequence the drug substance release. The hydrophilic component is part of the gel coating structure providing support thereto. Drug substance is the metoclopramide hydrochloride or a pharmaceutically acceptable salt thereof.

La présente invention concerne une composition pharmaceutique de chlorhydrate de métoclopramide à libération lente, sous forme de comprimés contenant 30 mg de principe actif pour une utilisation dans le milieu gastro-intestinal. La préparation est principalement composée d'un polymère hydrophile, d'un polymère hydrophobe, d'un composant hydrophile et de chlorhydrate de métoclopramide. Le polymère hydrophile se gonfle sous l'effet de l'hydratation lorsqu'il est mis en contact avec l'eau, formant ainsi une couche de gel qui contrôle la libération du principe actif. L'eau contenue à l'intérieur de la matrice dissous le principe actif qui se diffuse vers l'extérieur à travers la couche de gel. Le pomyère hydrophobe présente des propriétés de déformation plastique à la contrainte, tendant à entourer les particules du principe actif réduisant la quantité et les dimensions des pores de la structure matricielle et par conséquent, retardant la libération du principe actif. Le composant hydrophile fait partie de la structure de la couche de gel et lui sert de support. Le principe actif est le chlorhydrate de métaclopramide ou un sel pharmaceutiquement acceptable de celui-ci.

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