Since errors in prescription potentially result in serious outcomes but can be prevented by multiple interventions, it is very important to update the knowledge on medicines and to improve physicians' prescription for medication safety. The aim of this article is to review useful interventions to improve prescription in developed countries. The passive dissemination of drug information or clinical practice guidelines alone is an insufficient method for improving most prescribing behaviors, although necessary. While the concurrent drug utilization review (DUR) could reduce inappropriate drug prescription and help physicians' prescribing decisions, retrospective DUR and penalties should not be operated in order to hold down the cost of medication.