Modified release multiple-units compositions of non-steroid...

A - Human Necessities – 61 – K

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A61K 9/20 (2006.01) A61K 9/50 (2006.01) A61K 31/00 (2006.01) A61K 31/542 (2006.01) A61K 45/06 (2006.01)

Patent

CA 2301883

An oral pharmaceutical modified release multiple-units composition for the administration of a therapeutically and/or prophylactically effective amount of a non-steroid anti-inflammatory drug substance (in the following abbreviated "an NSAID substance") to obtain both a relatively fast or quick onset of the therapeutic effect and the maintenance of a therapeutically active plasma concentration for a relatively long period of time. The modified release multiple-units composition comprises at least two fractions of multiple units such as a first and a second fraction. The first fraction comprises individual units which are designed to quickly release the drug substance and the second fraction comprises individual units which are designed to slowly release the drug substance to enable a delayed and extended release of the drug substance. Typically, the second fraction comprises multiple units which are coated with a sustained release coating designed to release the drug substance in such a manner that the maintenance of a therapeutically active plasma concentration for a relatively long period of time are obtained. By suitable adjustment of the release pattern of the at least first and second fraction a composition is obtained which is adapted to once- or twice-a-day administration.

Composition pharmaceutique orale contenant des unités multiples à libération modifiée et servant à administrer une quantité efficace sur le plan prophylactique ou thérapeutique, d'une substance médicamenteuse anti-inflammatoire non stéroïde (sous forme abrégée, substance NSAID) afin d'obtenir à la fois une mise en place rapide de l'effet thérapeutique et le maintien d'une concentration de plasma thérapeutiquement active pendant une durée relativement prolongée. Cette composition contient au moins deux fractions d'unités multiples, telles qu'une première et qu'une deuxième fractions. La première fraction comprend des unités individuelles conçues pour libérer rapidement la substance médicamenteuse et la deuxième fraction comprend des unités individuelles conçues pour libérer lentement la substance médicamenteuse, ce qui permet d'obtenir une libération retardée et prolongée de ladite substance. Cette deuxième fraction comprend normalement des unités multiples pourvues d'un revêtement à libération prolongée conçu pour libérer la substance médicamenteuse de façon à obtenir le maintien d'une concentration de plasma thérapeutiquement active pendant une durée relativement longue. Le réglage adéquat de la libération programmée de la première et de la deuxième fractions au moins permet d'élaborer une composition adaptée pour une administration journalière ou deux fois par jour.

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