Invest1 publisherNot yet confirmed elsewhere3 min readPublished Updated
Seized Wegovy parcels outnumber licensed shipments nine to one in Korea's customs data
Korea's grey channel for weight-loss drugs now dwarfs the licensed one by case count, and a foreign web price that domestic prescriptions cannot match is doing the work.
The Investor · Invest desk

What happened
- Korean customs caught 4,155 illegal personal imports of Wegovy and Mounjaro in the first half of this year, 3.5 times the 1,189 cases logged in all of last year.
- Over the same 2024-to-June window, 596 shipments cleared customs through licensed importers, 391 of them in the first half.
- International mail carries the trade: 3,489 cases in the first half, and 84.8 percent of all cases since 2024.
- Customs and sedaily both attribute the surge to foreign website prices sitting below the cost of a domestic prescription.
- Both drugs are classed as harmful drugs, so customs blocks every quantity and destroys what it holds at clearance.
Compiled by The InvestorSomething wrong?How this is made
Why it matters
- constraint The harmful-drug designation leaves no personal-use quantity to shelter in, so a buyer who wants the foreign price has no compliant route to it and becomes an offender by definition.
- cost Interception costs the buyer the whole purchase, not a fee, and volumes rose regardless, which prices the risk of being stopped below the saving on a domestic script.
- exposure The hand-carry route grew nearly fivefold, and unlike a parcel it puts an identifiable traveller in front of an inspector rather than an anonymous package in a mailbag.
- precedent The stated answer is more blocking at the border, which leaves the domestic price untouched and makes seizure counts a measure of postal screening capacity rather than of demand.
The ratio buried in the customs numbers is wider than the raw case counts get credit for. Cumulative seizures against cumulative licensed clearances is close to nine to one [14]. Take only the first half of this year and it is about eleven to one [15]. The licensed route is not collapsing, though: its 391 shipments in six months annualise to roughly 782, about four times the 191 logged for all of last year [18]. Both channels are growing. The unofficial one is compounding faster, at a first-half run rate of around 8,310 cases, seven times the 2025 figure [19].
The two sides of that ratio are not the same unit, and the difference cuts against the alarm. Customs is counting intercepted attempts on one side and consignments cleared by importers on the other. A licensed importer's shipment is wholesale volume; a seized international parcel is one person's month or two. Nine to one describes how many buyers are trying, not how many doses actually cross.
On price, sedaily puts a month's supply at about 150,000 won on foreign websites, with some listings at 70,000 to 100,000 won [5][6]. The cheap end sits 33 to 53 percent below the typical foreign figure [16], so buyers are not shopping against a single overseas price but against a spread. The domestic comparison in the report is the loose part: 150,000 won is described as, in some cases, more than half the price of a domestic prescription, which reads as a saving of more than half rather than a price above half [5]. Either reading leaves the gap large enough to move volume.
Everything caught at clearance is held and destroyed in full, with no partial quantity to fall back on [10], and the customs service treats unauthorised import as a Customs Act offence [11]. Each parcel is therefore a wager where the downside is the entire purchase. Cases multiplied anyway [1], which is a revealed estimate of the odds: buyers are acting as though the chance of interception, times the price paid, is still smaller than the domestic bill. The number that would test that belief is not in this dataset. Customs publishes catches, not attempts, so the pass-through rate is unknown to the agency and to the buyers alike.
Classification is what turns the price gap into a crime statistic. Ordinary medicines get a personal allowance of six bottles or a three-month supply [8]; these two get nothing at any quantity without a recommendation letter exempting them from import requirement verification [9]. There is no legal version of paying the foreign price, so the border absorbs the difference one mailbag at a time.
What to watch
- Whether the Ministry of Food and Drug Safety revisits the harmful-drug designation or opens a limited personal-import allowance, which would pull volume back on-channel.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence68
- Adoption
- Insufficient
- Hype gap+20
- Incentives40
- Confidence62
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
The Korea Customs Service said it caught 4,155 illegal imports of weight-loss drugs, including Mounjaro and Wegovy, in the first six months of this year, 3.5 times the 1,189 cases recorded for all of last year.
ReportedSupportedSource: Korea Customs Service, via en.sedaily.com2 sources— create a free account to open themView cited source - [2]
Illegal import cases were four in 2024 and 1,189 last year, and topped 4,000 in the first half of this year; cumulative cases from 2024 through the first half of this year totalled 5,348.
- [3]
Only 596 shipments cleared customs through licensed importers over the same period: 14 cases in 2024, 191 last year and 391 in the first half of this year.
- [4]
Cases caught in international mail rose from two in 2024 to 1,046 last year and 3,489 in the first half of this year, accounting for 84.8% of all cumulative cases.
- [5]
A month's supply of Wegovy or Mounjaro can be bought on foreign websites for about 150,000 won, described as in some cases more than half the price of buying with a domestic prescription.
ReportedSupportedSource: en.sedaily.com2 sources— create a free account to open themView cited source - [6]
On some foreign websites, a month's supply has reportedly been purchased for 70,000 to 100,000 won.
ReportedSupportedSource: en.sedaily.com2 sources— create a free account to open themView cited source - [7]
Cases caught in travellers' personal belongings grew from one in 2024 to 134 last year and 656 in the first half of this year.
- [8]
Under the Korea Customs Service's notice on import clearance procedures, ordinary medications may be brought in for personal use within set quantities: six bottles or less, or up to a three-month supply.
- [9]
Mounjaro and Wegovy are designated harmful drugs by the Minister of Food and Drug Safety and cannot be imported without a recommendation letter exempting them from import requirement verification.
- [10]
For harmful drugs reported by the Ministry of Food and Drug Safety, the Korea Customs Service blocks all imports regardless of quantity, and weight-loss drugs caught at the clearance stage are held and then destroyed in full.
- [11]
A Korea Customs Service official said unauthorised imports of Wegovy and Mounjaro are a serious violation punishable under the Customs Act and that the agency will thoroughly block the illegal inflow of harmful drugs at the border.
ReportedSupportedSource: Korea Customs Service official2 sources— create a free account to open themView cited source - [12]
The lower cost of buying from foreign websites, compared with obtaining a domestic prescription, is seen as driving the increase in attempted personal imports.
ReportedSupportedSource: en.sedaily.com2 sources— create a free account to open themView cited source - [13]
Imports via express delivery services totalled one case in 2024, nine last year and 10 in the first half of this year.
- [14]
Cumulative seizures of 5,348 against 596 licensed clearances is a ratio of about 8.97 to one.
- [15]
First-half seizures of 4,155 against 391 licensed clearances in the same period is a ratio of about 10.6 to one.
- [16]
Foreign listings at 70,000 to 100,000 won are 33% to 53% below the typical foreign price of about 150,000 won a month.
- [17]
Hand-carried cases of 656 in the first half are about 4.9 times the 134 recorded for all of last year.
- [18]
Licensed clearances of 391 in six months annualise to 782, about 4.1 times last year's 191.
- [19]
First-half seizures of 4,155 annualise to 8,310, about 7.0 times last year's 1,189 cases.
Sources
1 independent publisher whose own reporting we read for this story.
- en.sedaily.comIllegal Imports of Weight-Loss Drugs Surge 3.5-Fold in Korea
2 articles · August 24, 2026
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