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Pharmaceutical formulation containing gelling agent

  • US 9,387,174 B2
  • Filed: 09/11/2015
  • Issued: 07/12/2016
  • Est. Priority Date: 08/06/2001
  • Status: Expired due to Term
First Claim
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1. A controlled release oral solid dosage form comprising:

  • (i) a first population of particles comprising hydrocodone bitartrate; and

    (ii) a second population of particles comprising polyethylene oxide;

    whereinthe particles of the first population are free from polyethylene oxide;

    the particles of the second population are free from hydrocodone bitartrate;

    hydrocodone bitartrate is the only drug in the dosage form; and

    polyethylene oxide is releasable from the particles of the second population in an effective amount to impart a viscosity of at least 10 cP when the dosage form is crushed and dissolved in 3 ml of water.

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