abstract |
A transdermal therapeutic system in the embodiment of a matrix or reservoir system is characterized by DOLLAR A - a content of at least one basic or neutral reacting pharmaceutical active ingredient DOLLAR A - a content of a pressure-sensitive adhesive polymer which has acrylic acid or methacrylic acid units as part of the chain , wherein the content of carboxyl groups, based on the average polymer mass, is 0.5 to 10.0% (m / m) and the carboxyl groups are present stoichiometrically at 5-110%, preferably 10-50%, in the form of alkali metal salts or alkaline earth metal salts . |