Analyzing the competitive landscape of the pharmaceutical market is a key aspect of assessing the drug supply system. This study aims to examine the changes in concentration levels within the wholesale segment of a regional pharmaceutical market. Data on the market shares of major distributors were collected and compiled from 461 contracts executed for the supply of pharmaceutical products in the selected region. The Herfindahl-Hirschman Index (HHIn) was employed to evaluate the competitiveness among pharmaceutical distributors. Additionally, an SV matrix was constructed, represented as a four-quadrant graph with market concentration ratios (CRSV) along the x-axis and Hall-Teidman indices (HTSV) along the y-axis.
The analysis of concentration metrics in the wholesale segment revealed the emergence of an oligopolistic market structure. The SV matrix illustrated how market concentration levels evolved in response to economic fluctuations. Based on these findings, recommendations were developed to enhance the competitiveness of regional pharmaceutical distributors. Assessing the dynamics of market concentration allowed for the evaluation of their current state, identification of trends, and formulation of strategies to optimize the wholesale distribution of pharmaceutical products.