Accidents due to the use of medicines brought to hospitals by inpatients have been reported and hospital pharmacists are required to manage the risks associated with such medicines.Many hospitals have recently introduced the Diagnosis and Procedure Combination with the objective of standardizing hospital treatment though most elderly inpatients have complications in addition to underlying diseases.We started to manage the medicines brought to our hospital by inpatients in July 2005.In this work,we have been checking the medicines brought to our hospital by inpatients,and have provided up-todate inpatient medication histories and drug information to doctors and nurses.By checking the medicines brought to our hospital by inpatients,we have been able to prevent the administration of contraindicated drugs,the unnecessary duplication of drugs and drug interactions.Our activities have also enabled inpatients to continue take medication safely for their complications after hospitalization,and drug costs to be kept down.