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Dual controlled release osmotic device

  • US 20060177510A1
  • Filed: 12/29/2005
  • Published: 08/10/2006
  • Est. Priority Date: 11/06/2001
  • Status: Active Grant
First Claim
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1. A dual controlled release osmotic device comprising:

  • a core comprising a controlled release active agent-containing first layer and a controlled release active agent-containing second layer, wherein the first and second layers are in contact with one another; and

    a membrane enveloping 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 layers;

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

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