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Dual controlled release dosage form

  • US 20060204578A1
  • Filed: 02/15/2006
  • Published: 09/14/2006
  • Est. Priority Date: 11/06/2001
  • Status: Active Grant
First Claim
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1. ) A dual controlled release osmotic device comprising:

  • a) a core comprising a first active agent-containing controlled release layer and a second active agent-containing controlled release layer in direct contact therewith; and

    b) a membrane surrounding the core, wherein the membrane comprises at least one preformed passageway in communication with at least one of the first and second active agent-containing controlled release layers;

    whereby the osmotic device provides a controlled release of the first active agent through the at least one preformed passageway according to a first release profile and the second layer provides a controlled release of the second active through the at least one preformed passageway according to a second release profile.

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