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Methods of producing stabilized solid dosage pharmaceutical compositions containing morphinans

DC
  • US 8,597,681 B2
  • Filed: 06/22/2011
  • Issued: 12/03/2013
  • Est. Priority Date: 12/22/2009
  • Status: Expired due to Fees
First Claim
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1. A granule substantially resistant to oxidative degradation of oxycodone, the granule comprising an interior region substantially comprising oxycodone and an exterior region substantially comprising at least one excipient selected from the group consisting of a binder, a filler, an antioxidant, a chelating agent, and combinations thereof, wherein the exterior region surrounds the interior region, and wherein the granule contains less than about 0.5% w/w of the total mass of oxycodone of each of any one or more of a degradant selected from 10-hydroxy oxycodone, di-hydroxy oxycodone, and oxycodone n-oxide after being stored for 6 months at 40°

  • C. and 75% relative humidity.

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