| abstract |
Transdermal therapeutic system (TTS), which contains an analgesic agent as the active substance, an agent that renders this active substance unusable, and a medium that results in the removal of the TTS from the patient's skin, the active substance and the agent that makes it unusable, come into contact with each other, since through this contact the active substance is destroyed, characterized in that it is constituted by the following layers, which are located one above the other: a) a removable liner, b) a matrix, which contains the active substance, and which is composed of one or several layers, c) a layer based on a material capable of absorption, d) a bag containing an aqueous solution of potassium permanganate as the agent which renders the active substance unusable e) a star of plastic material such as the aforementioned medium f) a layer of contact adhesive glue, which is free of the active substance. |