Use of methylnaltrexone and related compounds

A - Human Necessities – 61 – K

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A61K 31/485 (2006.01)

Patent

CA 2312234

A method for preventing or treating opioid induced side effects including dysphoria, pruritus, urinary retention and gastrointestinal dysfunction and non-opioid induced changes in gastrointestinal motility. The method comprises administering methylnaltrexone or another quaternary derivative of noroxymorphone to a patient prior to the administration of an opioid or after the onset of side effects induced by the administration of an opioid, wherein the methylnaltrexone or quaternary derivative is administered by the route selected from the group consisting of intravenous, intramuscular, transmucosal, transdermal, and oral administration, preferably administered orally in an enterically coated form.

La présente invention concerne un procédé permettant d'empêcher ou de traiter les effets secondaires induits par l'opioïde, notamment la dysphorie, le prurit, la rétention urinaire et le dysfonctionnement gastro-intestinal ainsi que les modifications de la motilité gastro-intestinale non induites par l'opioïde. Ce procédé consiste à administrer au patient du méthylnaltrexone ou un autre dérivé quaternaire du noroxymorphone avant de lui administrer un opioïde, ou après l'apparition des effets secondaires induits par l'administration d'un opioïde, tandis que le méthylnaltrexone ou le dérivé quaternaire est administré par une voie sélectionnée dans le groupe constitué par les voies intraveineuse, intramusculaire, transmusculaire, transdermique et orale, l'administration orale étant de préférence sous forme entièrement enrobée.

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