PROBLEM TO BE SOLVED: To suppress an occurrence frequency of an inappropriate extraction quantity by making use of information on an actual filling quantity, for example, when the extraction quantity is guided or checked, in regard to a liquid medicine making the actual filling quantity of a supply container 6 larger than a specified quantity.SOLUTION: An information processor 13 makes a notification device 14 notify a dispenser, who extracts a liquid medicine from a supply container 6 by a manual suction instrument 8, of working contents based on dispensing instruction data, and determines the propriety of an extraction quantity on the basis of a change in weight during the extraction of the liquid medicine by measurement using an electronic balance 12. The information processor retains data on not only a specified quantity but also the actual filling quantity in a medicine master in regard to the liquid medicine which makes the actual filling quantity of the stored medicine in the supply container 6 different from the specified quantity, and sets a prescription quantity as a target quantity when prescription instructions are provided on a capacity-by-capacity basis. On the other hand, when the prescription instructions are provided on a supply-container-by-supply-container basis, the information processor adopts the specified quantity as the target quantity and also performs caution indication based on the actual filling quantity and checking of a threshold-and-number tolerance, in regard to the liquid medicine which makes the actual filling quantity different from the specified quantity.
