Defined daily dose (DDD) is arbitrary chosen technical unit for measuring medicament usage and it is not a recommended therapeutic dose. It is in fact a statistical parameter for monitoring medicaments usage, and it is related to the
dose which is usually prescribed for the indication that the medicament was registered for. The aim of this work is to perform a detailed analysis of the extent and structure of the region of South Backa. According to the obteined data, medicaments
used in treatment of gastroinestinal tract contributed with 15.52 DDD/1000 inhabitants per day. Most commonly used are antacids and anti-ulcer drugs (8.14 DDD/1000 inhabitants per day). Medicaments used in treatment of muscular and skeletal
system contributed with 14.30 DDD/1000 inhabitants per day. Antiinflammatory and antirheumatic drugs sre used in amounts of 14.18 DDD/1000 inhabitants per day. In our country there is no complex survey of drug usage because there is no way of monitor ing which could apprehend all possible information sources. Defined daily dose is not introduced into practical qualitative and quantitative monitoring. It is necessary to make systematic network of information sources to provide for insight into medicament usage