Drug utilization review (DUR) is defined as an authorized, structured, ongoing review of prescribing, dispensing and use of medication. It involves a comprehensive review of patients’ prescription and medication data before, during and after dispensing to ensure appropriate medication decision-making and positive patient outcomes. As a quality assurance measure, DUR programs provide corrective action, prescriber feedback and further evaluations [5]. . 5 DUR is classified in three categories:

Prospective - evaluation of a patient’s drug therapy before medication is dispensed

Concurrent - ongoing monitoring of drug therapy during the course of treatment

Retrospective - review of drug therapy after the patient has received the medication

Drug utilization evaluation is a discipline which aims to understand how and why drug are used as they are, so that drugs use and healthy outcomes can be improved.