Flying domestically (TSA)
Reconstituted peptides in vials with syringes are treated like other injectable medications such as insulin. Carry them in your carry-on, not checked luggage (the hold isn't temperature-controlled).
- Keep vials in a clear bag with your carry-on liquids
- Medically necessary liquids may exceed 3.4 oz — declare them at screening
- A doctor's letter or prescription label smooths the process
- Pack syringes with the medication they're used for
Cold chain, door to door
Use an insulated case with cold packs that won't freeze the vials (freezing degrades many peptides). A small thermometer strip helps you confirm 2–8°C.
For long trips, plan where you'll refrigerate on arrival before you leave.
International travel
- Carry a doctor's letter, ideally translated into the destination language
- Keep vials in original, labeled packaging
- Research the destination country's rules — some restrict even prescribed peptides
- Declare everything at customs; don't try to hide medical items