Release controlled transdermal therapeutic system

Details Release controlled transdermal therapeutic system Release controlled transdermal therapeutic system

A - Human Necessities

61

K

A61K 9/70 (2006.01)

Patent

CA 2175122

A release controlled transdermal therapeutic system having excellent storage stability and capable of optionally controlling the release rate of drugs, comprising a rubbery adhesive, microcapsules comprising a water-soluble wall material and encapsulating drugs as core material, and a water-insoluble, rubber- and rubber solvent-insoluble, water absorbing resin powder, such as starch-polyacrylic acid salt copolymers, the microcapsules and the resin powder being dispersed in the rubbery adhesive.

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