The invention relates to the combination of polyvinyl acetate and
water-insoluble, acid-insoluble, or alkali-insoluble polymers used for
producing film coatings for forms of administration in which agents are
released in a controlled manner, and methods for the production thereof.
The controlled-release properties can be specifically adjusted by means
of said combinations, resulting in films having excellent mechanical
stability and storage stability. In particular, agents are released
independent of the pH by means of the inventive forms of administration.