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Bioadhesive progressive hydration tablets

  • US 20070031491A1
  • Filed: 05/11/2006
  • Published: 02/08/2007
  • Est. Priority Date: 09/12/1997
  • Status: Active Grant
First Claim
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1. A bioadhesive controlled, sustained release progressive hydration pharmaceutical composition for delivering an active ingredient to a mucosal surface of a mammal, comprising:

  • an effective amount of an active ingredient, and a sustained release active ingredient delivery system comprising a water insoluble, water-swellable cross-linked polycarboxylic polymer, and a water soluble polymer, wherein the polymers are present in an amount in combination which enable the composition to become progressively hydrated to provide an extended release of the active ingredient over time;

    wherein the delivery system includes amounts of the polymers which, in combination, are effective to allow the composition to progressively hydrate when contacting a mucosal surface of a mammal to provide an extended release of the active ingredient to the mammal.

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