South Korea reports surge in illegal drug and counterfeit obesity medication seizures

South Korean authorities have reported a significant surge in the illegal importation of narcotics and counterfeit obesity medications. Drug seizures at airports have increased more than fivefold over the past three years, with 95% of last year's cases concentrated at Incheon International Airport. New types of drugs are showing a particularly sharp upward trend, with seizures increasing approximately eightfold since 2022.

Simultaneously, the illegal importation of obesity treatments such as Mounjaro and Wegovy has skyrocketed. Through August, customs authorities intercepted 5,030 cases, a more than fourfold increase compared to the total for last year. Most of these illegal imports arrive via international mail, followed by traveler luggage.

Analysis of counterfeit Mounjaro products originating from India revealed dangerous inconsistencies, including significant variations in active ingredient levels and the presence of unidentified impurities. Furthermore, these products were often transported without the required cold-chain refrigeration (2–8°C) necessary to maintain stability. The Korea Customs Service has pledged to strengthen inspections across all entry channels to block these hazardous substances.