7 Things Every Traveler Carrying Insulin, Ozempic or Peptides Should Know Before Their Next Trip

Insulin, GLP-1 medications like Ozempic and Mounjaro, and reconstituted peptides are all biologics — and heat breaks them down. Leave them too warm for too long and the active ingredient quietly loses its strength.

This is what makes heat so dangerous: spoiled medication looks completely normal. No color change, no odor, no warning. Most people only find out when their blood sugar won't come down or their dose stops working.

On a 70°F day, the inside of a car can pass 100°F in under half an hour. On a hot afternoon it can hit 120°F or more — far above the 86°F ceiling most insulins and GLP-1s can tolerate.

Unopened, most insulin and GLP-1 pens need refrigeration between 36–46°F. In use, they can sit at room temperature below 86°F — but only for a limited window (often around 28 days, and as little as 14–21 for some). Once you're traveling, staying in range is on you.

You're allowed to bring insulin, GLP-1 pens and cooling packs through security. But checked luggage can freeze or bake in the cargo hold, so medication should always travel in your carry-on, within reach.

Loose ice melts within an hour or two, soaks everything around it, and gives you no idea what temperature your medication is actually sitting at. Better than nothing — but it's not protection.

The fix most travelers land on is a compact, insulated cooler made specifically for temperature-sensitive medication — one with a built-in thermometer so you're never guessing.