Anionic Methacrylic Acid Copolymers as Release Enhancers

摘要

The study involves incorporation of a pH -dependent anionic methacrylic acid copolymer as release enhancer in the pH-independent water-insoluble but swellable ammonioalkyl methacrylate copolymers coating suspensions. This ensures a complete and rapid release of the drug towards the end of the profile without changing the pH independency of the systems.