If you take daily medication, the question probably hit you while packing: is this actually allowed in Korea? For most travelers, the answer is yes — but a few categories of medicine have strict rules that are easy to miss.
Short answer: Korea lets travelers bring ordinary prescription and over-the-counter medicine for personal use — generally up to six bottles or a three-month supply — with your prescription and a doctor's letter. Medicines containing controlled substances (including some ADHD drugs, sleeping pills, strong painkillers, and CBD/THC products) need advance approval from the Ministry of Food and Drug Safety before you fly. Some common ingredients that are casual purchases at home — melatonin, pseudoephedrine, and certain cough-syrup ingredients — are prescription-only or restricted in Korea. Entry rules change — double-check with the official K-ETA site or Korean embassy before your trip.
This article is general travel information, not medical advice. Confirm the status of your specific medication with the Korean embassy in your country or the Ministry of Food and Drug Safety before you travel.
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What personal-use medicine can I bring into Korea?
For non-controlled medicines, Korea's approach is practical: bring what you need for your trip and prove it's yours. Guidance from the Korea Customs Service and the U.S. Embassy in Korea both point to the same benchmark — up to six bottles of medicine, or roughly a three-month supply, for personal use. When I flew into Incheon last spring with two months of blood-pressure tablets in my carry-on, nobody asked a single question, because everything was in original packaging with a prescription to match. Pack for your trip length — excessive quantities can trigger inspection even for ordinary pills.
What documents should I carry for my medicine?
For any prescription medicine, carry three things in your hand luggage: your original prescription, a doctor's letter naming your medical condition, and a doctor's statement listing each medicine you are carrying, in English. For ordinary over-the-counter items you do not need paperwork. Keep everything in original labeled packaging.
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What if my medicine is a controlled substance in Korea?
This is the section most travelers skip, and it is the one that matters most. Korea regulates narcotics and psychotropic substances under its Narcotics Control Act, and the categories are broader than many visitors expect. Since 2009, every traveler — regardless of nationality — has needed advance approval from the Ministry of Food and Drug Safety before entering Korea with medications containing controlled substances: opiate painkillers, benzodiazepines (many anti-anxiety drugs and some sleeping pills), amphetamine-based medicines (some ADHD treatments), and CBD/THC oil.
The critical point: a valid foreign prescription alone is not enough for these drugs. You must apply to the Ministry before arrival — online applications have been available since late 2024 through the Drug Safety Korea portal. Apply at least 10 business days before your flight with a passport copy, flight details, a doctor's letter, and a valid prescription in English or Korean. The permit covers your stay plus a few extra days (up to 90 days total), goes only to the person taking the medicine, and the medicine must be carried in hand luggage. One rule has no exceptions: controlled medicines cannot be posted or couriered into Korea — anything mailed in is seized.
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Which common medicines surprise travelers?
Several medicines that feel harmless at home are prescription-only or restricted in Korea. Melatonin has been reported to customs as a harmful pharmaceutical — melatonin gummies can be withheld at the airport even in accompanied baggage, because melatonin is prescription-only here. Cold and cough products deserve a careful look: pseudoephedrine decongestants are subject to purchase limits, and the active ingredient dextromethorphan (found in many over-the-counter cough syrups) is classified as a psychotropic substance. Customs has flagged codeine, dextromethorphan, alprazolam, and zolpidem among the most frequently detected problem medicines. Always check your label's ingredients, and search by ingredient as well as product name.
Medicine rules at a glance
| Category | What to do | Documents needed |
|---|---|---|
| Ordinary prescription medicine (personal use) | Carry up to about a three-month supply in original packaging | Prescription, doctor's letter stating condition, list of medicines |
| Ordinary over-the-counter medicine (personal use) | Carry reasonable amounts for your trip | No paperwork normally needed |
| Controlled substances (narcotics/psychotropics, including some ADHD drugs, sleeping pills, strong painkillers, CBD/THC products) | Get advance approval from the Ministry of Food and Drug Safety at least 10 business days before arrival; carry in hand luggage | MFDS permit, prescription, doctor's letter |
| Mailing or couriering medicine | Do not mail controlled medicines — they will be seized; other mail orders face their own import rules | Not a workaround for a missing permit |
How do I declare medicine at Korean customs?
Travelers can submit a declaration electronically through the Korea Customs Declaration for Travelers app before landing, and goods are scanned at the "Goods to Declare" gate on arrival. Ordinary personal-use medicine does not usually require a formal declaration — but when in doubt, declare. If an officer asks, show your prescription and doctor's letter calmly.
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What if my medication is restricted or not sold in Korea?
Before your trip, check whether your medication is actually approved in Korea — a drug sold under one brand name at home may have a different name here, or not be sold at all. Ask your doctor about local equivalents. If you need a new prescription in Korea, visitors can see a doctor locally for approved medications; for readily available drugs, buying locally is often easier than importing. Do not order a restricted product online for shipment to your hotel — overseas purchases face the same import controls, and flagged products are withheld regardless of route.
FAQ
Can I bring vitamins and supplements?
Generally yes, in reasonable personal-use amounts. But check ingredients: some supplement ingredients common overseas — such as melatonin — are prescription-only or restricted in Korea. The ingredient list matters more than the brand.
What happens if I arrive without the required MFDS permit?
The medicine can be held or confiscated, and you may face penalties — a foreign prescription does not substitute for the permit. Discover the issue before flying, and apply immediately or ask your doctor about a Korea-approved alternative.
Can a family member carry my medicine for me?
No — permits for controlled substances are issued only to the person taking the medicine, and in general the patient should carry their own medication. Do not pack someone else's prescription drugs in your bag.
Where can I check whether my specific drug is controlled in Korea?
The Ministry of Food and Drug Safety runs an English drug-information search showing whether a product is approved in Korea, plus a narcotics database of regulated substances. Search by active ingredient as well as product name.
This is general information, not medical or legal advice. Medicine rules are strict and can change — confirm your specific situation with the Korean embassy or the Ministry of Food and Drug Safety before you fly.
Related guides
Documents to Prepare Before Flying to Korea
How to Fill Out Korea's Arrival Card Correctly