| abstract |
The invention relates to a multilayer oral thin film, comprising a matrix layer containing at least one polymer and at least one pharmaceutically active agent and at least one backing layer, the at least one backing layer having at least one polymer which has free carboxyl groups, with 10 to 100% of the free carboxyl groups of the at least a polymer comprising free carboxyl groups, neutralized as a salt, comprises a process for its preparation and its use as a medicament. |