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Tamper resistant dosage forms

DC
  • US 9,770,416 B2
  • Filed: 01/24/2017
  • Issued: 09/26/2017
  • Est. Priority Date: 08/25/2006
  • Status: Active Grant
First Claim
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1. A pharmaceutical composition comprising:

  • at least one active agent comprising an opioid or a pharmaceutically acceptable salt thereof;

    at least one high molecular weight polyethylene oxide (PEO), having an approximate molecular weight of from 1 million to 8 million;

    optionally at least one low molecular weight PEO having an approximate molecular weight of less than 1,000,000;

    wherein(a) the active agent and high molecular weight PEO are combined in a solid oral extended release dosage form that is (i) compression shaped, (ii) air cured by heated air, without compression, for a curing time of about 15 minutes to about 8 hours at a curing temperature of about 60°

    C. to about 90°

    C., (iii) cooled, and (iv) hardened;

    (b) the high molecular weight PEO is at least partially melted upon curing and comprises at least about 50% (by weight) of the dosage form;

    (c) the active agent comprises at least about 1.3% (by weight) of the dosage form;

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

    (e) the total weight of the dosage form is calculated by excluding the combined weight of said film coatings; and

    (f) the dosage form is expanded upon curing, as measured by a decrease in density of at least about 1.5%, and the dosage form provides a hardness of at least about 439 N.

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