Diabetes in South Korea: Insulin Storage, Import Rules and Emergency Care
South Korea's summer heat and humidity stress insulin storage. Know the import rules, local brand names, and emergency numbers before you fly.
What changes when you travel to South Korea with diabetes
South Korea has a world-class healthcare system and a well-supplied pharmacy network, but the country's humid monsoon summers, with Seoul temperatures routinely hitting 29–33°C (84–91°F) and humidity peaking above 78% in July, create real cold-chain risk for insulin and other temperature-sensitive medications. Korean customs also enforces strict medication import rules, and foreign prescriptions are not accepted at local pharmacies without a Korean doctor's re-issue.
This guide covers what to declare at customs, which brand names to recognise at Korean pharmacies, how to find an endocrinologist, and what to say in Korean in an emergency. Store your International Patient Summary (IPS) on Nomedic before you travel so any clinician can access your full clinical picture instantly.
Medical disclaimer: This guide is for informational purposes only and does not constitute medical advice. Always consult your specialist before travelling, particularly regarding changes to your treatment schedule, vaccination requirements, and travel insurance.
Key risks
Key risks for diabetes travellers in South Korea
Insulin degradation in summer heat and humidity
Seoul's July heat index regularly reaches 33°C (91°F) with relative humidity above 78%, conditions that can degrade unprotected insulin within hours. Full cold-chain management guidance is in the In Country tab.
Customs documentation requirements
South Korea permits a personal supply of up to three months for insulin and diabetic supplies, but you must carry original prescriptions and a doctor's letter specifying your condition. The Korean Customs Service at Incheon Airport has final authority on what enters the country.[1]
Foreign prescriptions not accepted at pharmacies
Korean pharmacies (약국, yakguk) cannot dispense prescription-only medications on the basis of a foreign prescription alone. If you run out or need emergency replacement, you must first obtain a Korean prescription from a local clinic or hospital.
Hypoglycaemia risk from dietary and activity changes
Korean cuisine is higher in refined carbohydrates and lower in fat than many travellers expect, and the amount of walking involved in exploring Seoul's major districts is substantial. Both factors shift glucose patterns unpredictably in the first days of travel.
Language barrier in a medical emergency
English-speaking clinicians are available at major Seoul hospitals, but outside the capital or in smaller facilities the language barrier is significant. Store Korean emergency phrases and your Nomedic IPS offline before you leave.
Winter cold and insulin freezing risk
Seoul winters regularly drop below -5°C (23°F), with occasional lows near -10°C. Insulin and other injectable medications can freeze and become ineffective if left in a bag outside or in an unheated vehicle. Keep all temperature-sensitive medication next to your body when outdoors.
Preparation checklist
- Book a pre-travel endocrinologist appointment — Review your current regimen, get a signed letter on headed paper naming your condition and all medications with INNs, and discuss any dose adjustments for time-zone changes.
- Carry a minimum 30-day supply plus a reserve — Korean pharmacies cannot dispense on a foreign prescription, so your supply must last the full trip with contingency for delays.
- Check my meds — Confirm your insulin, pump supplies, and test strips are on your Nomedic medication record with correct INNs before you fly.
- Store your IPS on Nomedic — Your IPS covers diagnosis, medications, allergies, and functional status; share it via QR at any Korean clinic instantly.
- Pack temperature-safe insulin storage — Use a dedicated insulin travel wallet (insulated, not frozen) rated for 2–8°C to manage both summer heat and winter cold in Korea.
- Carry fast-acting glucose in hand luggage — Pack glucose tablets or gel; declare at security alongside your medications.
- Print bilingual medication documentation — Prescriptions and the doctor's letter should be in English; Korean translation improves communication at the customs red channel.
- Save emergency numbers offline — Ambulance and fire: 119; police: 112; medical information in English: 1339. Save all three in Nomedic and in your phone contacts before departure.
- Find a specialist before you travel — Identify the nearest endocrinology department (내분비내과) in your destination city and save the address offline.
- Learn more — Review the insurance section above and confirm your policy explicitly covers diabetes-related emergencies.
Documents to carry
Documents to carry when travelling to South Korea with diabetes
Korean customs requires original prescriptions and a doctor's letter for all medications you carry. Keep every document accessible in the Nomedic app and in a physical backup.
Your International Patient Summary (IPS)
Your Nomedic IPS contains your diabetes diagnosis, all current medications with INNs, allergies, and relevant comorbidities in a format readable by any clinician worldwide. In South Korea, handing a clinician your IPS QR code at a clinic or emergency department immediately removes the language barrier around your diagnosis and treatment history. Update your IPS before departure to ensure dosages are current.
Full document checklist
Keep the following accessible on your phone and ready to share. Your Nomedic IPS covers items 1 and 6 automatically.
- ·Your Nomedic IPS Covers your diabetes diagnosis, medications, allergies, and functional status. Offline and QR-shareable.
- ·Endocrinologist letter on headed paper Must state your diagnosis, all medications with INN and brand name, and confirm the supply is for personal use.
- ·Original prescriptions with INN names Required by Korean customs; carry originals plus photocopies and a digital copy in Nomedic.
- ·Travel insurance policy schedule Confirm diabetes is named as a covered condition; save the 24-hour assistance number in your Nomedic profile.
- ·Medication storage instructions Carry the original packaging showing storage requirements, useful if hotel staff need to accommodate refrigeration.
- ·Emergency numbers (South Korea) Ambulance/fire: 119; police: 112; English medical information: 1339. Saved offline in Nomedic.
Medications advice
Bringing your diabetes medications to South Korea
South Korea permits travellers to import up to a three-month personal supply of insulin and diabetic supplies, including syringes and test strips.[1] For all prescription medications you must carry original prescriptions and a letter from your doctor specifying your condition and the medicines you are importing.[2] The Ministry of Food and Drug Safety (MFDS) at www.mfds.go.kr[7] is the authoritative source for import queries; the Korean Customs Service at Incheon Airport makes the final admission decision.
Do not post your medication to South Korea.
Mailing prescription medication into South Korea without going through formal import procedures is prohibited and the shipment is likely to be seized. Always carry your full supply in person in your hand luggage, never in checked bags.
Diabetes medications: brand names, INNs, and South Korea availability
South Korea's pharmaceutical market carries most major diabetes drug classes. The table below lists INNs alongside brand names you are likely to encounter at Korean hospitals and pharmacies.
Refrigerate at 2–8°C; opened vials stable up to 28 days at room temperature below 30°C.
Refrigerate at 2–8°C; opened pen/vial stable up to 28 days below 30°C.
Ozempic pen: refrigerate at 2–8°C; in-use pen stable up to 56 days below 30°C.
Metformin and iodinated contrast media
If you require any contrast imaging study (CT scan, angiography) while in South Korea, inform the radiologist that you take metformin. Metformin must typically be withheld before and after procedures involving iodinated contrast due to the risk of contrast-induced nephropathy and lactic acidosis. The Korean Diabetes Association has published specific guidance on this interaction. Carry this information in your Nomedic IPS.
Travelling with injectable therapies
If your diabetes management includes insulin, GLP-1 receptor agonists, or other injectables, these steps apply regardless of where in South Korea you are travelling.
Your medication list, ready to share.
Nomedic stores your medication name, INN, dosage, and frequency — readable by any clinician worldwide.
At your destination
Healthcare and prescriptions in South Korea
South Korea operates the National Health Insurance (NHI) system, a single-payer universal scheme that covers residents; short-term visitors are treated as private patients and pay the full unsubsidised fee. A private outpatient consultation with an endocrinologist (내분비내과 전문의) at a major Seoul hospital typically costs ₩50,000–₩150,000 (~$36–$109 / ~€33–€99), and an emergency department visit can cost ₩100,000–₩500,000 (~$72–$362 / ~€67–€332) before any investigations or treatment.[4] Foreign prescriptions are not valid at Korean pharmacies; if you need medication replaced locally, a Korean doctor must issue a local prescription first.
Korean pharmacies are identified by a green 약 (yak) sign and are well stocked with common diabetes medications including metformin, sulfonylureas, and DPP-4 inhibitors. Insulin and GLP-1 receptor agonists are typically dispensed via hospital pharmacies rather than retail pharmacies, so for those medications your first stop should be the endocrinology outpatient department of a hospital rather than a street-level yakguk.
Insulin and injectables are dispensed differently in South Korea
Hospital pharmacies are the primary dispensing point for insulin and GLP-1 receptor agonists in South Korea, particularly outside major cities. If you need an emergency supply of your injectable, go directly to the endocrinology department (내분비내과) of a hospital with your Nomedic IPS and prescriptions; retail pharmacies (약국) carry common oral diabetes medications but may not stock injectables routinely.
Finding a diabetes specialist
Endocrinologists in South Korea practice in the 내분비내과 (naebunbi naegwa) department of hospitals. Major university-affiliated hospitals including Samsung Medical Center, Asan Medical Center, Seoul National University Hospital, and Yonsei Severance Hospital all have dedicated endocrinology departments with international patient desks and English-speaking staff.[3] Walk-in appointments are accepted at most outpatient clinics but expect a wait of one to three hours at busy periods. Identify the nearest department before you travel and save the address and phone number offline.
Search for providers near your destination
Use Nomedic's provider search to find diabetes specialists in South Korea. Save the address and phone number offline before you travel.
If your cold chain breaks in South Korea
A temperature excursion does not automatically mean your insulin is unusable. Most manufacturers specify that an opened pen or vial of insulin can be kept at room temperature[5] below 25–30°C for 28 days; check the product leaflet for your specific formulation. Do not assume the medication is spoiled before assessing the circumstances.
Managing heat, humidity, and activity day to day in South Korea
Seoul's summer months (June to August) combine heat, high humidity, and the jangma monsoon season, with the heat index regularly reaching 33°C (91°F) and relative humidity above 78% in July. These conditions accelerate insulin degradation and increase the risk of hypoglycaemia through heat-induced changes in absorption and dehydration.
Check your glucose more frequently than at home during the first three to five days; the combination of different food timing, increased walking, and heat will shift your usual patterns. Seoul's extensive subway network is air-conditioned and provides reliable shade during the hottest part of the day (11 am–4 pm). Korean convenience stores (편의점, pyeonuijeom) are open 24 hours, widely available, and stock glucose drinks, sweets, and snacks for rapid correction. Winter travel brings a different risk: temperatures below -5°C can cause insulin to freeze if left in an outer coat pocket or a bag left in a cold car. During winter, keep all insulin and injectables in an inner pocket close to your body.
Hypoglycaemia from heat is not the same as a diabetic emergency
Feeling sweaty, dizzy, and weak in Seoul's summer heat does not always indicate hypoglycaemia. Dehydration and heat exhaustion can produce similar symptoms. Check your glucose before treating. If glucose is within range and symptoms persist beyond 30 minutes after moving to a cool environment and rehydrating, follow the guidance in the Emergency tab.
Korean phrases for clinicians
Show your Nomedic IPS first — it removes the need to explain your diagnosis verbally. If verbal communication is needed:
“저는 당뇨병이 있습니다.”
I have diabetes.
“저는 저혈당 상태입니다.”
I am having a hypoglycaemic episode.
“내분비내과 전문의가 필요합니다.”
I need an endocrinologist.
“저는 인슐린을 투여하고 있습니다.”
I take insulin.
“가장 가까운 내분비내과가 어디입니까?”
Where is the nearest endocrinology department?
“인슐린 긴급 처방이 필요합니다.”
I need an emergency supply of insulin.
Insurance considerations
What to know about travel insurance
Many standard travel policies exclude claims arising from pre-existing conditions unless you declare them at application and pay a loading or accept a specific endorsement. Emergency diabetes-related hospitalisation at a private hospital in Seoul can cost ₩500,000–₩3,000,000 (~$360–$2,170 / ~€330–€1,980) per day before treatment costs, so adequate cover matters.
What to look for in a policy
Not just 'pre-existing conditions covered'. Your condition should be named on the policy schedule.
Covers repatriation if local care is insufficient or your specialist requires you to return home.
Covers emergency replacement of insulin or other medication if lost, damaged, or delayed in transit.
So someone can communicate with Korean clinicians on your behalf, especially outside Seoul.
What to declare at application
Declare thoroughly. Incomplete disclosure can invalidate your entire policy, not just the diabetes-related claim.
Type 1, Type 2, gestational, or other classification matters for underwriting.
Use the INN alongside the brand name when declaring.
Insurers use this to assess current control; declare accurately.
Declare any cardiovascular, renal, or neuropathic complications alongside the primary diagnosis.
Your policy number and emergency assistance line, saved alongside your IPS and accessible offline.
South Korea does not have a reciprocal healthcare agreement with the EU or EEA, so an EHIC or GHIC card provides no cover here. All visitors pay as private patients unless covered by a separate travel insurance policy. Comprehensive travel insurance is essential regardless of what cards you hold.
Emergency protocol
Getting to an emergency department in South Korea
A diabetic emergency — severe hypoglycaemia, diabetic ketoacidosis, or hyperosmolar hyperglycaemic state — requires immediate hospital care. Contact your travel insurer's 24-hour assistance line first if you are stable enough to do so; they can direct you to an approved facility and initiate a direct-billing arrangement. Call 119 for an ambulance if you cannot get yourself to hospital.
When you arrive — follow in order
Full clinical picture in seconds, no verbal explanation needed.
Hand your phone to the triage nurse:
저는 당뇨병 응급 상황입니다. 인슐린이 필요합니다.
I am having a diabetes emergency. I need insulin.
Your Nomedic medications tab lists all INNs and dosages; the triage team needs this before prescribing anything.
If you use a CGM, show the trend graph on your device — Korean clinicians will recognise it.
Calls and location
Dial 119 for ambulance and fire services in South Korea. Dial 112 for police. Dial 1339 for the 24-hour English-language medical information centre. When you call 119, your location is automatically traced. If you need English interpretation, the 119 dispatcher can connect you to the Korea National Tourist Organisation's translator service.
In hospital
If you have peripheral neuropathy, even minor injuries to your feet may not produce pain but can deteriorate rapidly. Ensure any wound is assessed by a clinician before discharge, and tell the treating team you have diabetes so they can adjust their wound management protocol.
After any emergency
Before you leave the hospital if possible.
Required for insurer reimbursement and continuity of care with your home specialist.
Open Nomedic and tap Share to generate a QR code any clinician can scan.
Frequently asked questions
Can I bring my diabetes medication into South Korea?
Yes. South Korea permits a personal supply of up to three months for insulin and diabetic supplies; you must carry original prescriptions and a doctor's letter stating your condition and the medicines you are importing. The Korean Customs Service at Incheon Airport has final authority.[1]
Do not post medication to South Korea
Mailing prescription medication without formal import procedures is prohibited and shipments are likely to be seized.
Are diabetes medications available in South Korea pharmacies?
Common oral diabetes medications (metformin, sulfonylureas, DPP-4 inhibitors) are available at retail pharmacies (약국, yakguk) with a Korean prescription; insulin and GLP-1 receptor agonists are primarily dispensed through hospital pharmacies, so go to a hospital endocrinology department for those. A foreign prescription is not valid in South Korea — you need a local doctor to re-issue a Korean prescription first.
What are the emergency numbers in South Korea?
Ambulance and fire
119 — your location is automatically traced when you call.
Police
112 — English interpretation available.
English medical information
1339 — 24-hour medical information centre with English-speaking staff.
How can I communicate my diabetes diagnosis in an emergency in South Korea?
Show your Nomedic IPS first. If verbal communication is needed:
“저는 당뇨병이 있습니다.”
I have diabetes.
“저는 인슐린을 투여하고 있습니다.”
I take insulin.
How does South Korea's summer heat affect my insulin?
Seoul's summer heat index regularly reaches 33°C (91°F) with humidity above 78% in July and August; temperatures above 30°C can degrade unprotected insulin within hours, reducing its effectiveness. Opened insulin vials and pens are typically stable up to 28 days at room temperature below 25–30°C — check your product leaflet for your specific formulation.
Use an insulated travel wallet
A dedicated insulin travel wallet with a gel pack keeps medication within the safe temperature range during outdoor activity. Ask your hotel to refrigerate backup supplies. In winter, keep insulin in an inner pocket to prevent freezing.
Do I need special travel insurance to visit South Korea with diabetes?
Yes. South Korea has no reciprocal healthcare agreement with most countries, so all visitors pay as private patients; emergency hospitalisation can cost ₩500,000–₩3,000,000 (~$360–$2,170 / ~€330–€1,980) per day before treatment costs. Standard travel policies often exclude pre-existing conditions, so you need a policy that explicitly names diabetes as a covered condition.
Declare thoroughly
Declare diabetes type, current medication, last HbA1c result, and any associated conditions. Incomplete disclosure invalidates the entire policy, not just the diabetes-related claim.
Sources
- [1] U.S. Embassy Seoul — Information on Controlled Substances and Medication Import
- [2] U.S. Embassy Seoul — Medical Assistance in South Korea
- [3] Seoul Official Travel Guide — Medical Emergencies and International Healthcare
- [4] National Health Insurance Service (NHIS) South Korea
- [5] FDA Prescribing Information — Insulin Storage and Stability
- [6] IATA Guidelines — Travelling with Medical Supplies in Cabin Baggage
- [7] Ministry of Food and Drug Safety (MFDS) — Medication Import Regulations