Short answer: TSA allows medically necessary liquids over 3.4 oz in reasonable quantities and unused syringes when they are with injectable medication, in carry-on or checked bags. Declare them at the checkpoint and screen them separately. Ice and gel packs for medical items are allowed even if partly melted. Plan the trip around your label's time and temperature limits.
| Item | Carry-on | What TSA says |
|---|---|---|
| Liquid medication 3.4 oz (100 mL) or less | Yes | Allowed; larger amounts need declaring. |
| Medically necessary liquids over 3.4 oz | Yes, declared | Allowed in reasonable quantities for your trip; declare at the checkpoint for inspection. |
| Unused syringes | Yes, declared | Allowed when accompanied by injectable medication; declare at the checkpoint. |
| Ice packs, gel packs for medical items | Yes | Allowed frozen, partially frozen or melted to keep medically necessary items cool. |
| Checked bags | Yes | Liquid medications and unused syringes are allowed in checked bags. |
Your label sets the limit, not the airline. Room-temperature allowances from current US labels:
| Product | Allowance | Max temperature |
|---|---|---|
| Zepbound / Mounjaro single-dose pen or vial | 21 days total | 30°C (86°F) |
| Wegovy single-dose pen | 28 days | 30°C (86°F) |
| Ozempic pen, in use | 56 days | 30°C (86°F) |
| Saxenda / Victoza pen, in use | 30 days | 30°C (86°F) |
| Norditropin FlexPro, in use | 3 weeks | 25°C (77°F) |
| Genotropin, Humatrope, Omnitrope | Refrigerate; Humatrope max 30 minutes a day out | 2-8°C (36-46°F) |
| Egrifta WR, mixed | Kept at room temperature; 7 days | 20-25°C (68-77°F); do not refrigerate |
Every one of these labels also says do not freeze. Packing in checked luggage and putting medication directly against ice can both risk freezing; the Genotropin instructions suggest an insulated bag to protect from heat or freezing. See can you freeze peptides.
No FDA label covers these, and we found no published study of how long the mixed vial stays stable in a fridge. There is no tested room-temperature window to plan around. TSA screening rules for liquids and syringes are the same; legality of carrying a specific compound, especially across borders, is a separate question this page does not cover. Not personalized advice.
If you mix on the road, the reconstitution calculator does the water-to-units math for any vial, for example TB-500 5 mg or ipamorelin 5 mg.