SEMI-PERMEABLE COMPOSITIONS PROVIDING REDUCED DRYING TIME FOR OSMOTIC DOSAGE FORMS

摘要

Disclosed are methods including providing an osmotic core; coating the osmotic core with a coating composition that comprises cellulose acetate butyrate; drying the coated osmotic core for a maximum period of about 36 hours; wherein the coated core is dried to an average residual solvent content of less than about 1000 parts per million. Also disclosed are coated osmotic cores and methods of administering the coated osmotic cores to a patient.