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Controlled release composition with semi-permeable membrane and poloxamer flux enhancer

  • US 20050048119A1
  • Filed: 09/14/2004
  • Published: 03/03/2005
  • Est. Priority Date: 09/20/2002
  • Status: Abandoned Application
First Claim
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1. A controlled release pharmaceutical tablet comprising:

  • (a) a core comprising;

    (i) a drug;

    (ii) at least one pharmaceutically acceptable excipient;

    (b) optionally a water soluble seal coat;

    (c) a semipermeable membrane coating covering said core wherein the membrane comprises;

    i) a material that is permeable to the passage of water and biological fluids and is impermeable to the passage of the drug; and

    (ii) a poloxamer. (d) at least one passageway in the semipermeable membrane

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