Multi-layer preparation in film form, consisting of hydrophilic polymers, for the rapid release of active ingredients

摘要

A multilayer preparation in the form of films of hydrophilic polymers for rapid release of substances present in the film layers into liquid surroundings is characterized in that adjacent layers differ from one another in that in each case one layer is soluble in a nonaqueous solvent in which the respective adjacent layer is insoluble or only slightly soluble.