Zaleplon gastroretentive drug delivery system

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/24 (2006.01) A61P 25/20 (2006.01) A61K 9/52 (2006.01) A61K 31/519 (2006.01)

Patent

CA 2745741

A biodegradable, multi-layered controlled release gastroretentive dosage form which is optionally divided into a first dosage of zaleplon for controlled release and a second dosage of zaleplon for immediate release in the stomach and gastrointestinal tract of a patient, folded into a capsule which disintegrates upon contact with gastric juice and the gastroretentive dosage form unfolds rapidly upon contact with gastric juice. The biodegradable, multi- layered gastroretentive dosage forms of the invention provide efficient sleep induction with good sleep maintenance and minimal next day residual effects.

L'invention concerne une forme posologique à rétention gastrique à libération contrôlée, multicouche et biodégradable, qui est en option divisée en une première dose de zaleplon pour la libération contrôlée et une deuxième dose de zaleplon pour la libération immédiate dans l'estomac et le tractus gastro-intestinal d'un patient, repliée en une capsule qui se désintègre au contact du suc gastrique, la forme posologique à rétention gastrique se dépliant rapidement au contact du suc gastrique. Les formes posologiques à rétention gastrique multicouches et biodégradables de l'invention permettent une induction efficace du sommeil avec un bon maintien du sommeil et des effets résiduels minimaux le jour suivant.

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