abstract |
The present invention provides a transdermal therapeutic system for controlled release of a water-soluble pharmaceutically active ingredient. A system comprising an occlusive backing layer, a central device facing the skin to release the agent, an adhesive layer concentrically surrounding the dosing device and a removable protective film, wherein the solid phase of the system is Such a transdermal therapeutic system formed of a solid material having a fleece or sponge-like structure. [Selection figure] None |