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Orally administrable opioid formulations having extended duration of effect

  • US 5,968,551 A
  • Filed: 07/27/1995
  • Issued: 10/19/1999
  • Est. Priority Date: 12/24/1991
  • Status: Expired due to Term
First Claim
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1. A bioavailable sustained-release oral analgesic dosage form for once-a-day administration, comprising:

  • a unit dose comprising a plurality of pharmaceutically acceptable matrices comprising an analgesically effective amount of an opioid analgesic or a salt thereof and a hydrophobic material, each of said matrices having a diameter from about 0.1 mm to about 3 mm, said dosage form being bioavailable and providing a therapeutic effect for about 24 hours or more after oral administration to a human patient.

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