Ozempic is semaglutide, given as a weekly injection and licensed for type 2 diabetes. The same active ingredient is sold as Wegovy and as Rybelsus, which is a tablet with different storage needs entirely. Because injectable medicines like Ozempic can be sensitive to temperature, storage is worth taking seriously, but the specific numbers, such as the exact temperature range and how long a pen can be kept once it is in use, are set out precisely in the official patient information leaflet that comes with your medicine, and on your pharmacy label. This article will point you to those sources rather than stating figures itself, because the details can vary by product, and the leaflet in your own box is the authoritative source for your specific pen.

The reason this matters more for a weekly injectable than for many other medicines is that a single pen is typically kept and used over several weeks, moving between a fridge, a bag, and wherever you happen to be when injection day comes around. That gives it more opportunities to be exposed to conditions outside what the leaflet describes than a tablet you take once and store in one place.

What to check on your own packaging and leaflet

  • The storage instructions printed on the carton and on the patient information leaflet inside it
  • Whether your pen needs to be kept refrigerated before first use, and what the leaflet says about storage once you start using it
  • Any expiry date printed on the pen or carton
  • Instructions about keeping the pen cap on and protecting it from light
  • Any specific guidance about what to do if the pen has been dropped, damaged, or exposed to conditions outside what is described

If you no longer have the leaflet, your pharmacist can provide another copy or point you to the manufacturer's current version. It is worth reading it in full at least once, rather than only skimming for the storage section, since related instructions about handling and checking the pen before use are often set out nearby.

A practical checklist for recording storage

  • Note the date you started using each pen, alongside where you have been storing it
  • If you use a fridge, note whether it has a thermometer and whether you check it periodically
  • If you travel, note how the pen was transported and stored each day, including any cooling method used
  • If a pen is ever left somewhere you were not expecting, such as a hot car or direct sun, write down how long and under what conditions, so you can describe it accurately to a pharmacist
  • Keep this log alongside your weekly injection record, so storage details and dosing dates sit together rather than in separate places

Heat and travel, given the diabetes context

Because Ozempic is a diabetes medicine, it is worth planning storage carefully around hot weather and travel specifically. General guidance on managing diabetes in the heat highlights that heat can affect medicines and supplies, and recommends planning transport and storage in advance rather than improvising once you are already travelling. Insulated bags, cool packs, and avoiding leaving medicine in direct sun or a hot vehicle are commonly discussed precautions, but exact handling should follow what your leaflet and pharmacist advise for your specific product.

If you are travelling somewhere warm, it can help to plan your storage arrangements before you leave rather than working it out once you arrive, particularly if your journey involves long car trips, flights, or time outdoors where consistent refrigeration is not straightforward.

When in doubt, ask rather than guess

If you are ever unsure whether a pen has been stored correctly, whether after a period of unusual heat, a fridge failure, or simply a gap in your records, do not guess about whether it is still safe to use. Contact your pharmacist with the details you have recorded, such as how long and under what conditions the pen was stored, and let them make that judgement. It is safer to ask and replace a pen than to use one you are unsure about, and a clear, dated storage log is exactly what makes that conversation quick and specific rather than vague.