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Illegal imports of weight-loss drugs triple in H1

Created at 24 Aug · 12:15 AM1 source↑ Market-relevant
IN SHORT

Customs data shows a significant increase in illegal imports of weight-loss medications like Wegovy and Mounjaro. In the first half of the year, 4,155 cases were detected, more than triple the total for all of 2025. Most illegal imports occurred via mail.

Key Numbers

4,155illegal import cases in H1
1,189illegal import cases in 2025
391legal import cases in H1
191legal import cases in 2025
3,489illegal mail shipments in H1
1,046illegal mail shipments in 2025
656cases carried by travelers in H1
134cases carried by travelers in 2025

Who's Involved

Korea Customs Service
compiled data on illegal drug imports
customs official
stated unauthorized imports are a serious violation
Illegal imports of weight-loss drugs triple in H1

↳ Why This Matters

The surge in illegal imports of weight-loss drugs highlights a growing demand and potential risks associated with unregulated access to these medications, prompting increased border control measures.

Key facts

  • Illegal imports of weight-loss drugs Wegovy and Mounjaro more than tripled in the first half of the year compared to the entirety of 2025.
  • A total of 4,155 cases of illegal imports were detected between January and June.
  • The number of illegal mail shipments containing these medications more than tripled from 1,046 in 2025 to 3,489 in the first half of this year.
  • Cases involving medications carried by travelers increased from 134 in 2025 to 656 in the first six months of the year.
  • Wegovy and Mounjaro are banned from being brought into the country in hand luggage.

The number of attempts to illegally import weight-loss medications, such as Wegovy and Mounjaro, from abroad in the first half of the year more than tripled compared to the entire previous year, according to customs data. A total of 4,155 cases involving the illicit import of these drugs were detected between January and June, significantly exceeding the 1,189 cases recorded for all of 2025.

Most of these illegal imports were facilitated through mail, with an increasing number of individuals purchasing the medications from overseas online platforms for international delivery. The customs agency identified 3,489 illegal mail shipments containing Wegovy and Mounjaro in the first six months of the year, a substantial increase from the 1,046 cases in all of 2025.

Additionally, cases involving medications carried by individual travelers rose to 656, up from 134 in the previous year. Wegovy and Mounjaro are prohibited from being brought into the country in travelers' hand luggage. A customs official emphasized that unauthorized imports are a serious violation of the Customs Act, subject to punishment, and pledged to block the inflow of harmful pharmaceuticals at the border.

Frequently asked questions

The primary drugs involved are Wegovy and Mounjaro.

Illegal imports more than tripled in the first half of the year compared to the entire previous year.

The majority of illegal imports are detected through mail shipments, with a significant number also carried by individual travelers.

Wegovy and Mounjaro are banned from being brought into the country in travelers' hand luggage, and unauthorized imports are subject to punishment under the Customs Act.

What Happens Next

01Customs will continue to block illegal pharmaceutical imports at the border.

How It Developed

Illegal imports of weight-loss drugs Wegovy and Mounjaro more than tripled in the first half of the year compared to all of 2025.
Customs detected 4,155 cases of illegal imports in January-June, compared to 1,189 cases in all of 2025.
Legal customs clearances for these drugs also increased, with 391 cases in the first six months versus 191 in all of 2025.
The majority of illegal imports were mail shipments, with 3,489 cases detected in the first half of the year.
Cases involving medications carried by individual travelers also rose to 656, up from 134 last year.
A customs official stated that unauthorized imports are a serious violation of the Customs Act and subject to punishment.

Sources

T1
Illegal imports of weight-loss drugs more than triple in H1Yonhap News Agency

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