Permeation-resistant osmotic engine and dosage form for controlled release of a liquid active agent formulation

摘要

The present invention relates to osmotic engines and dosage forms providing the controlled release of a liquid active agent formulation. More specifically, the present invention is directed to osmotic engines, dosage forms and methods that preserve osmotic engine functionality and reduce void volume formation in osmotically driven dosage form providing the controlled release of liquid active agent formulations.