Method for controlling a drug dispensing system

Automated pharmaceutical delivery systems have been in use for over thirty years. The initial purpose of such systems was to reduce the high rates of medication errors associated with manual distribution. In modern times, automated systems present more sophisticated advantages. These include: further reduction of errors, lower costs associated with pharmaceutical distribution, reduction of personnel, inventory control, substance control, automated documentation, and relieving professional pharmacists of many tasks. The current state of the art of automated pharmaceutical delivery systems, otherwise known as medication management devices generally fall under three categories: automated devices in the central pharmacy area; automated devices in the patient care unit; and point-of-care information systems. An automated drug dispensing system includes a cabinet adapted to store a variety of prepackaged pharmaceuticals in a plurality of bins for filling patient prescriptions. Each bin stores a particular variety of packaged multiple-dose pharmaceutical. Each variety of pharmaceutical is associated with a particular code. A controller receives request signals and in response generates dispense signals. Each bin includes a dispenser coupled to the controller for dispensing the packaged pharmaceuticals therefrom in response to a dispense signal sent from the controller. After a package is dispensed, a code reader determines the code of the dispensed package and verifies whether the code on the dispensed package matches the code of the requested package.