- ✓Walmart and many chain pharmacies can provide emergency insulin without a prescription in most U.S. states
- ✓Always pack double your insulin supply split between carry-on and checked bags to prevent emergencies
- ✓Order backup supplies from mdsdiabetes.com before any trip to ensure you never run short
What to Do If You Run Out of Insulin While Traveling
Running out of insulin while away from home is one of the most stressful situations a person with diabetes can face. Whether your supplies were lost, stolen, damaged by heat, or simply miscounted, knowing your options in advance can make the difference between a minor inconvenience and a medical emergency.
This guide walks you through step-by-step actions to secure emergency insulin quickly — and how to prevent this situation from happening in the first place.
Step 1: Stay Calm and Assess Your Situation
First, determine exactly how much insulin you have left and how long it will last based on your typical daily dose. This gives you a realistic window to act. If you use a pump, check your reservoir. If you're on multiple daily injections, count remaining units carefully.
Step 2: Go to a Local Pharmacy
In the United States, many pharmacies — including CVS, Walgreens, and Walmart — can dispense a limited emergency supply of insulin without a prescription in most states. Specifically:
- Walmart pharmacies sell ReliOn brand NPH and Regular human insulin over the counter for around $25 per vial. While not identical to modern analogs, it can serve as a short-term bridge.
- CVS and Walgreens pharmacists can often contact your home pharmacy to verify your prescription and fill it at a new location.
- Always bring your insulin pen or vial label — it contains the exact drug name, strength, and prescribing doctor's information.
Step 3: Contact Your Insurance or Pharmacy Benefit Manager
Call the member services number on the back of your insurance card. Many plans allow emergency out-of-network fills when traveling. Your pharmacy benefit manager (PBM) can authorize an early refill or direct you to an in-network pharmacy near you.
Step 4: Reach Out to Your Prescribing Doctor
Your endocrinologist or primary care physician can electronically send a new prescription to a pharmacy near your travel location. Most modern EHR systems allow this in minutes. Save your doctor's after-hours contact before every trip.
Step 5: Visit an Urgent Care or Emergency Room
If you cannot access a pharmacy or reach your doctor, go to an urgent care clinic or hospital emergency room. Explain that you have diabetes and have lost access to your insulin. Physicians can prescribe insulin immediately, and hospitals will have it on hand.
Step 6: Contact the Nearest U.S. Embassy or Consulate (International Travel)
If you are traveling internationally, the U.S. Embassy can provide a list of local physicians and hospitals that treat American travelers. ISOS and Global Rescue are also travel medical assistance services worth subscribing to before international trips.
How to Prevent Running Out of Insulin While Traveling
Prevention is always the best strategy. Here are the most important habits to build before any trip:
- Pack double your supply. Always bring at least twice the insulin you expect to need, split between your carry-on and checked luggage.
- Use a travel insulin cooler. Insulin exposed to temperatures above 86°F (30°C) degrades rapidly. A quality insulin cooling case protects your supply for hours or days.
- Order a backup supply early. Sites like mdsdiabetes.com carry a wide range of insulin supplies, pen needles, syringes, and storage solutions — order ahead of your trip so you have everything you need before you leave.
- Carry a written prescription and letter from your doctor describing your condition and medications, especially for international travel.
- Store supplies in two separate bags. If one bag is lost or stolen, you still have a backup.
Traveling with an Insulin Pump
Pump users should always carry backup insulin pens or syringes in case the pump fails or is lost. Bring extra infusion sets, reservoirs, and pump batteries. MDS Diabetes stocks pump supplies from leading manufacturers, making it easy to stock up before travel season.
International Insulin Considerations
Insulin concentration varies by country. The U.S. uses U-100 insulin almost exclusively, but many countries use U-40. Using the wrong syringe with the wrong concentration can cause dangerous dosing errors. Always clarify the concentration when obtaining insulin abroad, and carry U-100 syringes from home.