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System for manufacturing controlled release dosage forms, such as a zero-order release profile dosage form manufactured by three-dimensional printing

  • US 20030198677A1
  • Filed: 10/29/2002
  • Published: 10/23/2003
  • Est. Priority Date: 10/29/2001
  • Status: Active Grant
First Claim
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1. A dosage form comprising:

  • an innermost region having a respective regional concentration of at least one Active Pharmaceutical Ingredient; and

    one or more additional regions, wherein each additional region completely surrounds the innermost region and any other region located interiorly of the region, and wherein each additional region has a respective regional concentration of at least one Active Pharmaceutical Ingredient which is different from the regional concentration in any region adjacent to the region.

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