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Tamper resistant dosage forms

DC
  • US 9,775,811 B2
  • Filed: 01/24/2017
  • Issued: 10/03/2017
  • Est. Priority Date: 08/25/2006
  • Status: Active Grant
First Claim
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1. A method of producing a plurality of extended release pharmaceutical dosage forms comprising the steps of:

  • mixing an active agent comprising oxycodone or a pharmaceutically acceptable salt thereof and at least one high molecular weight polyethylene oxide (PEO), having an approximate molecular weight of from 1 million to 8 million, to provide a PEO composition;

    compressing the PEO composition to provide a plurality of shaped matrix compositions;

    curing the shaped matrix compositions by exposure to heated air at a curing temperature that is at least about 60°

    C. for a curing time of at least about 10 minutes, to provide a plurality of cured matrix compositions;

    cooling the cured matrix compositions;

    combining any of the matrix compositions with at least one additive, before or after curing; and

    optionally providing the cured matrix compositions with at least one film coating, after curing and cooling;

    wherein(a) the molecular weight of each PEO is based on rheological measurements;

    (b) the high molecular weight PEO comprises at least about 30% (by weight) of each dosage form;

    (c) the total weight of each dosage form is calculated by excluding the combined weight of any film coatings;

    (d) the active agent comprises at least about 2.4% (by weight) of each dosage form; and

    (e) each cured matrix composition comprises a solid oral pharmaceutical dosage form that provides an extended release of at least one active agent.

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