Market Structure and Pricing Behavior of Pharmaceutical Products in Owerri: A Microeconomic Study

The pricing behavior of pharmaceutical products in developing country retail markets is shaped by market concentration, distribution chain structures, and information asymmetries that can result in welfare-reducing overpricing for consumers. This study examines the market structure and pricing behavior of pharmaceutical products in Owerri, Imo State, from 2021 to 2024. The study is anchored on the Industrial Organization Theory of Market Structure, which establishes that the degree of market concentration and the competitive dynamics within an industry determine pricing strategies and consumer welfare outcomes. A cross-sectional survey research design was adopted, targeting licensed pharmaceutical retail outlets and wholesale distributors in Owerri. From an estimated population of 780 pharmaceutical businesses, a sample of 256 respondents was selected using stratified random sampling. Structured questionnaires and retail price surveys for a basket of 20 essential medicines constituted the data instruments. Findings reveal that the Owerri pharmaceutical retail market exhibits characteristics of oligopolistic competition, with price markups on essential medicines ranging from 45 to 120 percent above manufacturer-stated prices, depending on distribution chain length and market zone. Areas with limited competition demonstrated the highest markups. The study concludes that pharmaceutical market concentration in Owerri generates pricing behavior that imposes significant welfare costs on consumers, particularly low-income patients. It is recommended that the Pharmaceutical Council of Nigeria intensify price monitoring inspections and that government pursue policies to facilitate market entry for competing retail pharmacy operators.

Keywords: Market structure, pharmaceutical pricing, oligopoly, Owerri, consumer welfare