Finding Insulin Abroad with Type 1 Diabetes: The Pharmacy Playbook (2026)

Thanksgiving is 21 days away, November is Diabetes Awareness Month, and the holiday travel season is starting. Most trips never need this guide, because the insulin you packed covers the trip. But long trips, delayed trips, and trips where a vial breaks or a fridge freezes your supply can all end the same way: standing in a foreign pharmacy, asking for insulin in a brand name nobody there recognizes. Running low on insulin abroad is a sourcing problem, not a panic problem, and sourcing problems have a sequence. This guide is that sequence: what to settle before you travel, how to ask for your insulin by its real name, what the prescription rules actually are in the places travelers go most, the concentration check that matters more than the brand name, and the emergency route when the pharmacy cannot help.

One honest note about who is writing this. I have had type 1 diabetes (T1D) for 20 years and I fly with an Omnipod 5 insulin pump and a Dexcom G7, a continuous glucose monitor (CGM) that reads glucose every few minutes. I pre-bolus in my usual way before eating, and I treat lows with sugar packets. This guide does not invent a story about me buying insulin abroad, and it does not tell you what insulin to take or what amount to use. Those decisions belong to you and your care team, and section 7 lists exactly what to ask them before the trip.

This guide is the sourcing companion to three others on this site, and it does not repeat them. The international travel guide is the wide version of traveling abroad with diabetes, and it mentions finding insulin abroad in one line. The lost or stolen supplies playbook covers the exact call order when your whole bag is gone. The customs and border rules guide covers crossing borders with the insulin you already own. Read the customs guide before you fly out, the lost-bag playbook if your bag disappears, and this guide when you need to buy more insulin where you are.

1. Before you travel: the four things that make the pharmacy visit work

Every successful insulin purchase abroad starts before the trip. The four items below are cheap to arrange at home and expensive to arrange from a pharmacy counter in a country where you do not speak the language.

1. Contact the maker of your insulin and ask whether it is sold in your destination. Novo Nordisk publishes a global directory of its local affiliates by country, and Sanofi and Eli Lilly publish country contact pages the same way. A type 1 traveler who has done this for years reports that Novo Nordisk told them whether the insulin was sold in the destination, whether it was over the counter or prescription only, and roughly what it cost. Do this for every country on a multi-country trip, because availability changes at each border.
2. Carry your prescription and your doctor's letter, on paper and on your phone. Your prescription lists your insulin by its generic name, which is the name that travels. Your doctor's letter explains that you have type 1 diabetes and need this medication. The travel letter guide covers what the letter should say, and the pre-trip appointment guide covers the full appointment, including asking for generic-name prescriptions before you leave.
3. Plan your top-up city on a long trip. If the trip is longer than the insulin you can carry, pick the city where you will restock before you leave home, and pick it for its pharmacies, not its scenery: a big city with large pharmacies beats a small town every time. Travelers report that the local diabetes association in the destination can say which towns and cities stock insulin most reliably, and some associations publish price lists on their websites.
4. Pack the 20% extra buffer, and keep it in your carry-on. This site packs 20% more supplies than calculated need on every trip, and the how much insulin to pack guide shows the math. The buffer is what turns a broken vial into an annoyance instead of a pharmacy emergency. Keep the buffer in the bag that stays with you, never in checked luggage.

2. The name game: what your insulin is called where you are standing

Insulin brand names change by country, and the brand name is usually the first thing that fails at a foreign pharmacy counter. The generic name is the one that travels. Learn yours before you go, and write it on a card you can show the pharmacist.

• NovoLog in the United States is NovoRapid almost everywhere else. Both are insulin aspart, a rapid-acting insulin, and a peer-reviewed clamp study found the US and EU versions had similar pharmacokinetic exposure and pharmacodynamic activity. If you use NovoLog at home, ask for NovoRapid abroad, and check the box says insulin aspart.
• Humalog and Lantus keep their names in the United States and the European Union. Humalog is insulin lispro, authorized for use throughout the EU since 1996, and Lantus is insulin glargine, authorized throughout the EU since 2000. Same name does not mean same everything: check the concentration and the delivery device, because pens, cartridges, and vials are not interchangeable without the right supplies.
• Know the generic name of every insulin you use, including the long-acting one. Rapid-acting aspart and lispro, long-acting glargine and degludec, intermediate-acting NPH, short-acting Regular: the pharmacist works from the generic name, not the brand on your home prescription. If you use a premixed insulin, know both parts of the mix, because a premix sold under a different name in the destination may have a different ratio.
• Fiasp is not NovoRapid. Fiasp contains the same insulin aspart, but it also contains an added ingredient, niacinamide, that makes it act faster. It is a different formulation, not a straight swap. If a pharmacist offers Fiasp when you asked for NovoRapid, that is a question for your care team, not a decision to make at the counter.
• Ask for the exact device you need, not just the insulin. A vial is useless without a syringe, a cartridge is useless without the matching reusable pen, and a prefilled pen is useless if you expected a vial. Travelers report being handed prefilled pens in Australia when they needed cartridges for a reusable pen, and being told in Spain that only pens were stocked when they needed a vial. Show the pharmacist your prescription and your device, and confirm the format before you pay.

3. The pharmacy visit: prescription rules by region, and what to say

The prescription rule changes at every border, and the only reliable answer is the one the pharmacist in front of you gives. What follows is what travelers and country guides report, so you know what to expect before you walk in. Treat every example as a starting point, not a guarantee, and always ask.

• Often available over the counter (OTC), which means without a prescription. Travelers report buying insulin over the counter in Vietnam, Malaysia, and Egypt, and in Spain a traveler bought insulin in a Barcelona pharmacy with a photo of the home prescription. Country guides report insulin is available without a prescription in most cases in France, and that Canada does not list insulin on its prescription drug list, so it can be bought over the counter from a pharmacist. Even where insulin is sold over the counter, the pharmacist may still ask to see your prescription or letter, so show it first.
• Prescription from a local doctor required. The United Kingdom and Australia both require a prescription from a local doctor, and travelers report needing a local prescription in Australia even when they had their home prescription with them. Germany typically requires a prescription as well. In these countries, plan on a local doctor visit, not a walk-in purchase, and budget the time for it.
• The United Kingdom has an emergency supply rule worth knowing. A community pharmacist in the UK can supply a medicine you are already prescribed, without a prescription, when there is a genuine immediate need and it is not practical to get a prescription without undue delay. Insulin is supplied as the smallest pack the pharmacist has available. This is a professional decision by the pharmacist, not a right, so bring your prescription and your doctor's letter and explain the situation plainly.
• Shop around, and ask the pharmacist first. Not every pharmacy stocks the same insulin at the same price, and travelers in Southeast Asia report that checking two or three pharmacies is worth the walk. The pharmacist is also the best source of the local answer: they can tell you whether insulin is sold over the counter or needs a local prescription, whether they can order your insulin, and which larger pharmacy nearby stocks it. Search for "pharmacy" on a map, start with the largest one, and ask.
• Buy only from a licensed pharmacy. A registered pharmacy with a pharmacist behind the counter is the safe source. Unregistered sellers and street vendors are where counterfeit medication shows up, and a vial of unknown origin is not a bargain at any price. If a price looks far below every other pharmacy in the area, walk away and ask a pharmacist why.
• Check the language before you go. Have the words for insulin, type 1 diabetes, blood glucose monitor, test strips, and sensor written down in the local language, and have your generic insulin name on a card. A short written note beats a long spoken explanation when neither side shares a language.

4. The concentration check: U-100, U-40, and the 2.5 times mistake

Brand names get the attention, but concentration is the check that prevents a dosing error. Concentration is the number of insulin units in each milliliter of liquid, and it is printed on the box as U-100, U-40, or another number. Read it before you use anything you bought abroad.

• U-100 is the standard in the United States and most of Europe. U-100 insulin holds 100 units in each milliliter, and insulin pens and cartridges are U-100. If you use pens, this section mostly does not apply to you, because the pen dial counts units directly. It applies the moment you switch to vials and syringes.
• U-40 still circulates in parts of Asia. U-40 insulin holds 40 units in each milliliter, and India is the clearest example of a country where both concentrations are still sold. If you buy insulin in Asia, check the box for U-40 before you assume U-100.
• A syringe is calibrated for one concentration only. U-100 insulin drawn in a U-40 syringe delivers 2.5 times the intended amount, because the syringe measures a larger volume for the same number on the scale. U-40 insulin drawn in a U-100 syringe delivers 40 percent of the intended amount. Either direction is a serious error, and the first direction can cause a severe low. Match the number on the syringe to the number on the vial, every time, and do not inject if they do not match.
• Check for higher strengths too. Humalog is also sold as a 200 units per milliliter prefilled pen in the EU, which holds twice the insulin in the same volume as the usual 100 units per milliliter pen. A pen that looks the same and dials the same numbers is not the same insulin if the concentration is different. Read the box, not the shape.
• Keep new insulin cool, and never freeze it. Insulin bought abroad needs the same storage as insulin bought at home. The hotel storage guide covers the room setup, including the minibar fridge trap. Insulin freezes at 32 degrees Fahrenheit, and frozen insulin is discarded.

5. The United States fallback: ReliOn and the emergency refill

If you are running low inside the United States, or you are flying home through the US, there are two routes that do not depend on your regular prescription. Neither is a substitute for your usual insulin without your care team saying so.

• Walmart ReliOn human insulin, about $25 per vial. Walmart sells ReliOn NPH and Regular human insulin for about $25 per vial, a price Novo Nordisk's own patient page states. In many US states these older human insulins are sold over the counter, without a prescription, though state law varies and a pharmacist may still ask for one. They are not the same as the newer analog insulins such as Humalog, NovoLog, or Lantus, and they work differently. Switching to them is a care-team decision, never a pharmacy-counter decision, and it is a decision to make with your care team on the phone, not alone in the aisle.
• Emergency prescription refills, state by state. In most US states, a pharmacist can dispense a short emergency supply of a medicine you are already prescribed, typically 72 hours to 30 days depending on the state, when your prescriber cannot be reached. Several states allow the pharmacist to dispense the smallest available package, for example one full vial of insulin, because a sealed vial cannot be split. The exact limit, and how many times it can be used, depends on the state you are standing in, so ask the pharmacist what the rule is there. A pharmacist can usually contact your home pharmacy to verify your prescription and can also request a new prescription from your doctor while you wait.
• Your travel insurance emergency line is the third call. If the pharmacy cannot help and a local doctor is not reachable, the emergency number on your travel insurance can arrange care, including a local doctor visit. Check your policy before the trip, so the call is not the first time you read it.

6. When the pharmacy cannot help: the local doctor and the hospital

Sometimes the sequence stops at the pharmacy: your insulin is not stocked, it needs a local prescription and no doctor is available that day, or the format you need is not sold in that country. That is the point to escalate, not the point to improvise.

1. See a local doctor. A local doctor can write a local prescription, tell you which pharmacy stocks your insulin, and advise on the nearest equivalent if your exact insulin is not sold there. The cost depends on the country, and your travel insurance may cover it. Bring your prescription, your doctor's letter, and the empty box or pen of the insulin you use, so the doctor sees the exact product.
2. Call your care team at home. If the time difference allows, your own care team can advise on the equivalent a local doctor or pharmacist is offering, and can send a prescription or letter to a pharmacy abroad where that is accepted. Do not make the switch decision without them.
3. Go to the emergency department if symptoms point to diabetic ketoacidosis (DKA). DKA is the dangerous complication that follows a shortage of insulin: the body burns fat for fuel so aggressively that acidic by-products called ketones build up in the blood. Get urgent help right away if you are vomiting, cannot keep fluids down, have fruity smelling breath, are breathing fast and deep, or feel confused or unusually drowsy. DKA is treated in hospital with intravenous fluids and insulin, and the hospital is the right destination when those symptoms are present. Do not wait for a pharmacy to open if they are.
4. Do not buy insulin from an unregistered seller while you wait. The delay is frustrating and the temptation is real, but a vial of unknown origin can be diluted, counterfeit, or stored wrong, and there is no way to check it by looking at it. Wait for the pharmacy, the doctor, or the hospital.

What never to do when you are running low abroad. Do not switch to a different insulin type without your care team. Do not use insulin from a box you have not read: check the generic name and the concentration on the box before every use. Do not stretch your supply by skipping insulin, because skipping insulin is what leads to DKA. Do not draw insulin out of a pen with a syringe. If the situation is getting worse, go to urgent care sooner rather than later: the sick-day travel playbook covers the wider sick-on-a-trip plan, including the red flags that mean urgent care.

7. Before the trip: the care-team conversation and the packing list

Book this conversation before the trip, not from a pharmacy abroad. The pre-trip appointment guide covers the full appointment, and these are the insulin-sourcing questions to add to it:

• What is the generic name and concentration of each insulin I use, and what is the nearest equivalent if mine is not sold in my destination?
• Is there any insulin I should never accept as a substitute, even if a pharmacist offers it?
• What should I do if I run low abroad: who do I call first, and what do I tell the pharmacist or local doctor?
• What are my DKA warning signs, and at what point do I go to the emergency department instead of waiting for a pharmacy?
• Can you write my prescriptions by generic name, and will you be reachable while I am traveling?
• Is there anything about this trip that changes the plan: a long trip, a remote destination, or a country where my insulin is not sold?

Packing for insulin sourcing is small, and it rides with the rest of the diabetes kit, counted with the 20% extra buffer this site uses on every trip:

• Your prescription and doctor's letter, on paper and on your phone.
• A card with each insulin's generic name, concentration, and device type, written out in full.
• The empty box or pen of each insulin you use, so a pharmacist abroad can match it exactly.
• Sugar packets for lows: one packet at 60 to 70, two packets below 60, then check again.
• A blood glucose meter and strips, for the moments when CGM readings do not match how you feel.
• Ketone checking supplies, if your care team has you check ketones.
• Your travel insurance emergency number, saved in your phone and written on paper.

If your insulin is sold everywhere you are going, this guide is still worth the read. The brand name on the box will still be different, the concentration will still be worth checking, and the pharmacy will still be the place that answers the prescription question for that country. The prep takes an hour at home. The pharmacy visit abroad takes the time it takes, and the prep is what keeps it short.

Frequently Asked Questions

Q: Can I buy insulin without a prescription abroad?

A: In many countries, yes. Travelers report buying insulin over the counter in Vietnam, Malaysia, Egypt, Spain, France, and Canada. In other countries, no: the United Kingdom and Australia require a prescription from a local doctor. Germany typically requires one too. The rule changes at every border, so ask the pharmacist in the country you are standing in, and carry your home prescription and doctor's letter so you can show exactly what you need.

Q: Is NovoRapid the same insulin as NovoLog?

A: Yes. Both are insulin aspart, a rapid-acting insulin. NovoLog is the brand name used in the United States and NovoRapid is the name used in Europe and many other markets. A peer-reviewed clamp study found the US and EU versions had similar pharmacokinetic exposure and pharmacodynamic activity. Humalog and Lantus keep the same names in the US and the EU: Humalog is insulin lispro and Lantus is insulin glargine in both. Always check the generic name and the concentration on the box before using insulin bought abroad, and ask your care team before switching to a different insulin type.

Q: What if my insulin is not sold in the country I am visiting?

A: Contact the maker of your insulin before you travel: Novo Nordisk publishes a global directory of its local affiliates by country, and Sanofi and Eli Lilly publish country contact pages the same way. They can tell you whether your insulin is sold in the destination and whether it needs a local prescription. If it is not sold there, ask your care team before the trip what the plan is, and ask a local doctor or pharmacist in the destination what the nearest equivalent is. Do not switch to a different insulin type on your own.

Q: What is the difference between U-100 and U-40 insulin?

A: The number is the concentration: U-100 insulin holds 100 units in each milliliter and U-40 holds 40 units in each milliliter. U-100 is the standard in the United States and most of Europe, and pens and cartridges are U-100. U-40 still circulates in parts of Asia, with India the clearest example. A syringe is calibrated for one concentration only, so U-100 insulin drawn in a U-40 syringe delivers 2.5 times the intended amount, and U-40 insulin in a U-100 syringe delivers 40 percent of it. Check the concentration printed on the box and on the syringe before use, and check the box for higher strengths too: Humalog is also sold as a 200 units per milliliter pen in the EU.

Q: Can I buy insulin at Walmart without a prescription?

A: Walmart sells ReliOn human insulin, NPH and Regular, for about $25 per vial, and Novo Nordisk's own patient page states that price. In many US states these older human insulins are sold over the counter, though state law varies and a pharmacist may still ask for a prescription. They are not the same as the newer analog insulins such as Humalog, NovoLog, or Lantus, and they work differently. Switching to them is a care-team decision, not a pharmacy-counter decision.

Q: What do I do if I run out of insulin completely abroad?

A: Start with a pharmacy and your home prescription, then a local doctor for a local prescription, then your travel insurance emergency line. If you are developing symptoms that point to diabetic ketoacidosis, which is DKA, go to the emergency department right away: vomiting, inability to keep fluids down, fruity smelling breath, fast and deep breathing, confusion, or unusual drowsiness. DKA is treated in hospital with intravenous fluids and insulin. Do not wait for a pharmacy to open if those symptoms are present.

Additional Details

• Name: Finding Insulin Abroad with Type 1 Diabetes: The Pharmacy Playbook (2026)
• Description: Running low on insulin in another country is a sourcing problem, not a panic problem. The 2026 pharmacy playbook: brand-name equivalents, prescription rules by region, the U-100 check, the US ReliOn fallback, and the emergency route when the pharmacy cannot help.
• Published: 2026-11-05