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Sustained-release formulations of colchicine and methods of using same

  • US 10,610,488 B2
  • Filed: 10/19/2018
  • Issued: 04/07/2020
  • Est. Priority Date: 04/16/2013
  • Status: Active Grant
First Claim
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1. A sustained release formulation of colchicine, comprising:

  • (a) granules comprising 0.6 mg of colchicine or a pharmaceutically acceptable salt thereof and a binder comprising a first hydroxypropyl methylcellulose (HPMC) in an amount of 1% to 30% (w/w) of the formulation, wherein the first HPMC has a viscosity of 6 mPa·

    s;

    (b) a release retarding agent admixed with, or blended with, the granules in an amount of between about 20% and about 30% w/w of the formulation, which comprises equal proportions of a second HPMC and lactose monohydrate, wherein the second HPMC has a viscosity that is different from the first HPMC; and

    (c) at least one pharmaceutically acceptable excipient admixed with, or blended with, the granules,wherein the sustained release formulation is in a form of a tablet or liquid, andwherein when the sustained release formulation is in the form of a tablet, the sustained release formulation further comprises a coating that is a taste-masking coating, enteric coating, seal coating, film coating, barrier coating, and/or a compression coating, wherein the coating is not a release retarding coating.

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