1. A drug dispensing system comprising: a) a conveyor having a path along which containers are moved; b) at least one container for drugs having a machine-readable indicia bearing information related to the drugs to be dispensed, the container being mountable upon the conveyor for movement along the path; c) a plurality of drug dispensing devices disposed above the path, d) at least one detection device mounted adjacent to the path such that the detection devices can read the indicia on the containers; e) a control computer operatively coupled to the conveyor, drug dispensing devices and detection devices.