Investigating the medication status prior planning surgery could be very important in the clinical setting. Patients are usually admitted to the hospital the day before the surgery in order to shorten the hospital stay. If we check the patient's preoperative medication history after admission, some patients might not be able to undergo surgery due to the potential presence of some medications that must be discontinued prior to surgery. Those incidences should be eliminated for all patients. In the Public Tomioka General Hospital, we routinely examine medication and supplement usage history and determine which medicine if any must be discontinued prior to surgery. With the increasing number of preoperative evaluations on medication (623 items in fiscal 2009, 1,577 items in fiscal 2013), there are concerns that additional preoperative tasks may affect the other tasks of the Pharmacy Department, such as dispensing time for medications. We investigated the correlation between the number of cases in whith the preoperative medications were checked and the total dispensing time for medications during the three months from August to Octorber, 2013. The dispensing time for medications was not correlated with the number of cases in which the preoperative medications were checked. Without setting up a special department, such as the Pharmaceutical Care Clinic, we may be able to evaluate preoperative medications within our routine work in the Pharmaceutical Department.