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GASTRIC RETENTIVE EXTENDED-RELEASE DOSAGE FORMS COMPRISING COMBINATIONS OF A NON-OPIOID ANALGESIC AND AN OPIOID ANALGESIC

  • US 20120321713A1
  • Filed: 06/21/2012
  • Published: 12/20/2012
  • Est. Priority Date: 03/11/2008
  • Status: Active Grant
First Claim
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1. A method for treating pain, comprising:

  • administering at least twice daily, a dosage form comprising a dose of acetaminophen and a dose of an opioid, wherein the dosage form comprises an extended release matrix that imbibes fluid after administration and swells to a size sufficient to promote gastric retention of the matrix, wherein within about 1 hour in an in vitro disintegration test the dosage form releases more than about 50% of the dose of acetaminophen, and wherein by about 6 hours in an in vitro disintegration test, the percent of opioid released from the dosage form is greater than the percent of acetaminophen released from the dosage form, and wherein the in vitro disintegration test is a USP type II apparatus at 37°

    C. in 0.1 N HCl.

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