Jabwise

Storing your pen

In the fridge, at 2 to 8°C, say the Mounjaro, Wegovy and Ozempic leaflets; Zepbound’s label also allows its KwikPen at room temperature, up to 30°C, for up to 30 days. All four say never freeze it, or use a pen that has been frozen. Wegovy and Ozempic add keep it from the cooling element, with the cap on.

2 to 8°C
Fridge, 2 to 8°CNever frozen

In their own words

Where to keep each pen before it’s started, and what each says about freezing, quoted as written. How long a started one keeps is in how long a pen lasts.

MedicineWhere to keep itFreezing
MounjaroIn a refrigerator, 2 to 8°CDo not freeze. If the pen has been frozen, DO NOT USE.Mounjaro KwikPen patient leaflet
Zepbound KwikPenStore multi-dose vial or single-patient-use KwikPen in the refrigerator between 36°F to 46°F (2°C to 8°C) or at room temperature [up to 86°F (30°C)]. Throw away the multi-dose vial or single-patient-use KwikPen after a total of 30 days at room temperature, 30 days after first use, or after taking 4 weekly doses, even if it still has medicine in it.Zepbound prescribing informationDo not freeze ZEPBOUND. Do not use ZEPBOUND if frozen.Zepbound prescribing information
Zepbound single-dose penStore single-dose pen and single-dose vial in the refrigerator between 36°F to 46°F (2°C to 8°C). If needed, each single-dose pen or single-dose vial can be stored at room temperature up to 86°F (30°C) for up to a total of 21 days.Zepbound prescribing informationDo not freeze ZEPBOUND. Do not use ZEPBOUND if frozen.Zepbound prescribing information
WegovyStore in a refrigerator (2°C to 8°C). Keep away from the cooling element.Wegovy FlexTouch patient leafletDo not freeze wegovy® and do not use it if it has been frozen.Wegovy FlexTouch patient leaflet
OzempicStore in a refrigerator (2 °C–8 °C).Ozempic patient leafletDo not freeze Ozempic® and do not use it if it has been frozen.Ozempic patient leaflet

Also in the leaflets

  • Not by the cooling element

    Before first use, Wegovy and Ozempic say keep pens in the fridge, away from the cooling element, and never frozen.

  • Cap on

    Wegovy’s and Ozempic’s leaflets both say keep the pen cap on, in order to protect the medicine inside from light.

  • Cloudy or discoloured

    Before use, Mounjaro’s leaflet says don’t use it if the medicine is cloudy, discoloured or has any particles in it.

  • Not in the bin

    Not down the sink or in household waste: the UK leaflets say ask your pharmacist how to throw away medicines.

Questions

What if my pen was frozen?

All four say don’t use it. Zepbound’s label adds, for its single-dose pen, throw the pen away and use a new pen.

Can a pen be out of the fridge once I’ve started it?

Yes, within each brand’s limit. Wegovy and Ozempic say up to 6 weeks below 30°C or in the fridge; Mounjaro says unrefrigerated, not above 30°C, for up to 30 days after first use; Zepbound’s KwikPen, a total of 30 days at room temperature, 30 days after first use, or 4 weekly doses, whichever comes first.

Do I need to warm it up before injecting?

Zepbound’s label says, for its single-dose pen, it is not necessary to warm the pen to room temperature. The other leaflets don’t say.

Supply

Jabwise nudges you before the fridge runs empty.

Set when your next order is due and how often it repeats, and Jabwise reminds you on the day or up to 14 days before.

Jabwise Supply with the next order due Sun 1 Nov, repeating every 4 weeks and a reminder 7 days before

Sources

General information, not medical advice. Follow your prescriber’s guidance.

Getting real advice

We’re not doctors. This page sums up what the NHS and the official medicine information say, and can’t tell you what’s right for your body: your prescriber’s instructions and the leaflet in your box come first. More in our terms.

  • Quoted from official sources, each one linked
  • Sources checked 12 October 2026
  • No dosing advice; your prescriber comes first