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Polymeric compositions and dosage forms comprising the same

  • US 20050196446A1
  • Filed: 03/05/2004
  • Published: 09/08/2005
  • Est. Priority Date: 03/05/2004
  • Status: Abandoned Application
First Claim
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1. A dosage form comprising:

  • (a) at least one active ingredient;

    (b) a core having an outer surface; and

    (c) a shell which resides upon at least a portion of the core outer surface, wherein at least a portion of the shell is semipermeable and is comprised of, based upon the total dry weight of the shell, from about 40 percent to about 99 percent of a water insoluble film forming polymer and from about 1 percent to about 30 percent of a gelling agent, and the shell comprises means for providing the active ingredient to a liquid medium outside the shell after contacting of the dosage form with the liquid medium.

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