A ten-year study of anti-diabetic drugs utilization in Iran.

Abstract

According to the world health organization (WHO), by the year 2030 diabetes will become the world's seventh leading cause of death. This study aimed to design and conduct a descriptive pharmacoepidemiological investigation of anti-diabetic drugs utilization during a ten-year period using the anatomical therapeutic classification/defined daily dose (ATC / DDD) system in Iran. Based on pharmaceutical wholesalers' sale reports, sale data, including value and volume, were retrieved from the Iranian Annual Pharma Statistics for 2009-2018. The ATC/DDD system was used to standardize the raw sales data. Anti-diabetic drug utilization was reported as DDD per 1000 person in the population per day. Expenditure was calculated as USD per DDD. Results were then analyzed descriptively. During the ten-year study period, total anti-diabetic drug consumption increased by 235.53%. Insulin utilization grew by 148.65%, whereas non-insulin agents' use showed a 132.68% increase. Anti-diabetic drugs' expenditure increased by almost 9-fold, but changes were accompanied with many fluctuations. Although the absolute expenditure of almost all classes of anti-diabetic drugs were increasing, this growth was greater in biguanides, which only includes metformin in Iran. Approximately one-third of anti-diabetic drugs expenditures were related to fast-acting insulins. Imported drugs share in cost was significant, but not in consumption. The overall share of insulin consumption was less than 19%, but their share of total value reached 60% of the anti-diabetic market. The growing trend in both insulin and non-insulin anti-diabetic drugs utilization is a substantial issue for health authorities' policy making for sustainable access to medicine.