Patent ID: 8865207
Filing Date: 2014-10-21
Classification: A61K

Abstract:
1. A transdermal drug delivery system for controlling the flux of a drug, made by a process comprising preparing a composition comprising: (i) a backing layer; (ii) an adhesive coating layer comprising an acrylic-based polymer, wherein said adhesive coating layer does not include any drug at the time of preparation, and wherein a first surface of said adhesive coating layer is affixed to one surface of said backing layer; (iii) a carrier composition layer comprising an acrylic-based polymer, wherein said carrier composition layer includes an excess drug concentration, wherein said excess drug is present in a solid crystalline form at the time of preparation, and wherein a first surface of said carrier composition layer is affixed to a second surface of said adhesive coating layer; and (iv) a release liner affixed to a second surface of said carrier composition layer; wherein said adhesive coating layer is selected to control the flux of said drug from the transdermal drug delivery composition.