DOSAGE FORM FOR ADMINISTERING A DRUG TO EFFECT CIRCADIAN THERAPY

摘要

An osmotic device (10) is disclosed that comprises a first and second means that act together to provide a drug-free interval prior to the delivery of a drug (15) from inside the device (10). The first means slows the passage of fluid through wall (12) into device (10), and the second means in the device delays the delivery of drug (16) from device (10).