Patent ID: 7011843

Claim:
A method for dissuading a human being from the oral administration of the whole or parts of a transdermal therapeutic system having a layer containing at least one pharmacologically active ingredient, which is toxic and/or causes addiction at oral, but not transdermal, administration, which comprises applying on the top of the layer containing the at least one pharmacologically active ingredient, at least one separate thin film layer being soluble in saliva and containing an effective amount of a substance, which does not interact with said pharmacologically active ingredient, and causes the immediate spitting out of said transdermal therapeutic system after oral contact due to an adverse, disgusting or bitter taste and/or an irritating effect on the oral mucosa and/or tongue of a human being, said substance being selected from the group consisting of gallic acid, quinine, tannin, caffeine, lobeline, tea tree oil, hyphomycete cultures, turpentine and angostura.