How long can a Saxenda pen stay out of the fridge?

The label gives one number: 30 days. After you start using a pen it can be stored for 30 days at controlled room temperature, 59°F to 86°F (15°C to 30°C), or in a refrigerator at 36°F to 46°F. It says the pen in use should be thrown away after 30 days even if there is Saxenda left in it.

My pen may have frozen. Can I still use it?

No. The label says do not freeze Saxenda and do not use Saxenda if it has been frozen. It also says not to store pens in the freezer or directly adjacent to the refrigerator cooling element, which is the part of the fridge most likely to drop below freezing.

Do unused pens have an expiry?

Yes. The label says unused Saxenda pens may be used until the expiration date printed on the label, if they are kept in the refrigerator. That is separate from the 30-day clock, which only starts when you begin using a pen.

Should I leave the needle on between injections?

No. The label says to always remove and safely discard the needle after each injection and to store the pen without an injection needle attached. It gives the reasons: it reduces the potential for contamination, infection and leakage, and it protects dosing accuracy.

What if I drop my pen?

The Instructions for Use say not to drop the pen or knock it against hard surfaces, and that if you do drop it or suspect a problem, you should attach a new needle and check the Saxenda flow before you inject. It also says not to try to repair the pen or take it apart.

Can I keep my pen in a hot car?

The label says to always keep your pen with you and not to leave it in a car or other place where it can get too hot or too cold. Room-temperature storage in the label tops out at 86°F (30°C), and it separately says to protect Saxenda from excessive heat and sunlight.

How do I get rid of used pens and needles?

The label says to put them in an FDA-cleared sharps disposal container right after use and not in the household trash, and not to recycle a used sharps container. It also says caregivers must be very careful handling used needles, and that you should never share a pen or needles with anyone else.

How to store Saxenda pens

Two places you can keep it

The fridge is the long-term home. Once you take a pen out, the room-temperature clock starts.

In the fridge

36–46°F (2–8°C)

Until the expiry date printed on the box (unused pens only)

Store new, unused pens in the refrigerator
Do not store in the freezer
Do not store directly next to the refrigerator cooling element
Keep the pen cap on when the pen is not in use, to protect Saxenda from light
Store the pen without an injection needle attached

Room temperature

59–86°F (15–30°C)

Up to 30 days once you start using the pen, then discard

Important: The label says the Saxenda pen you are using should be thrown away after 30 days, even if it still has Saxenda left in it. A pen in use can be kept at room temperature or in the fridge — the 30-day limit applies either way, so write the date you first used it on the box.

Safe vs damaging conditions

Getting this wrong means the drug silently stops working — the pen looks identical either way.

Safe

Unused pens in the fridge at 36–46°F (2–8°C) until the printed expiration date
A pen in use for up to 30 days at 59–86°F (15–30°C)
A pen in use kept in the fridge instead, still within the same 30 days
The pen cap on, to protect Saxenda from light
The pen stored with no needle attached
Carrying a spare pen and needles, which the label recommends in case of loss or damage

Damages the drug

Freezing — the label says do not freeze Saxenda and do not use it if it has been frozen
Storing the pen directly adjacent to the refrigerator cooling element
Excessive heat and sunlight — the label says to keep Saxenda away from heat and out of the light
Leaving the pen in a car or anywhere it can get too hot or too cold
Keeping a pen in use for longer than 30 days
Dust, dirt or liquid — the label says not to wash, soak or lubricate the pen

How to spot a damaged pen

The big trap: a frozen-then-thawed pen looks completely normal. Check these signs before every injection.

Do not use the pen if you see any of this

The liquid is not clear and colourless — the label says to use the pen only if the solution is clear, colourless and free of particles
The pen has been frozen at any point
The needle is bent or damaged
No drop appears at the needle tip after repeating the flow check, even with a new needle
The pen you are using has been in use for more than 30 days
The expiration date printed on the label has passed

If in doubt, call your pharmacy — most will replace a damaged pen if you bring it in.

Disposing of used pens

Never the regular bin. Needles need a sharps container.

Disposing of used pens

1Put the needle straight into an FDA-cleared sharps disposal container after each injection — the label says not to put it in household trash
2Do not put the inner needle cap back on the needle; if you have no sharps container to hand, the label describes a one-handed method using the outer cap
3Put empty pens, and any pen used for 30 days that still contains Saxenda, into the sharps container too
4If you do not have an FDA-cleared container, the label describes a heavy-duty plastic container that closes with a tight-fitting, puncture-resistant lid, stands upright and stable, is leak-resistant and is labelled as hazardous waste
5When the container is almost full, follow your community guidelines — the label points to fda.gov/safesharpsdisposal for state-by-state information

General storage tips for GLP-1 pens

Where in the fridge

Middle shelf is best — most stable temperature
Not the door — temperature swings every time it opens
Not the back wall — may freeze when the fridge cycles
Not the crisper drawer — too humid, can damage the pen

Travelling with your pen

The room-temperature window above sets how many days you have — these rules for getting there are the same for any GLP-1 pen.

Always in hand luggage

Never put the pen in checked baggage. Airplane cargo holds can drop well below freezing, which permanently damages the drug.

Insulated cool bag

For flights over a few hours, use a dedicated insulin travel case with a cold pack. Wrap the cold pack so it does not touch the pen directly — direct contact can freeze it.

Airport security

TSA and most international airports allow injectable medication through security. Bring the original box with the prescription label. You do not need a doctor's letter, but it can help at some borders.

Never in a hot car

A parked car in summer gets far hotter than the storage limit. Any temperature above 86°F shortens the life of the pen. If you are worried, take it with you into air-conditioned spaces.

Common questions

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Last reviewed: September 2026

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