According to the 2nd level of ATC code (therapeutic subgroup), drugs used in diabetes were the most common drugs (51.2%), followed by antithrombotic agents (10.3%), psycholeptics (8.8%), antiepileptics (3.5%), analgesics (2.4%), thyroid therapy drugs (2.4%), antihypertensives (2.4%), psychoanaleptics (1.8%), agents acting on the renin-angiotensin system (1.8%), and stomatological preparations (1.8%). Here, REN is linked to diabetes mellitus.