Insulin in Pakistan: how to store it and check it is safe
Store unopened insulin in the fridge at 2 to 8 °C, never let it freeze, keep it out of heat and sunlight, and do not use it if it looks cloudy when it should be clear, has clumps, or has been frozen or overheated. Insulin is a protein, and heat or freezing can weaken it without changing how it looks, which shows up as unexplained high blood sugar.
This guide is general information. Follow the leaflet in your own pack and your doctor's advice, because storage times differ between insulin types.
Storing insulin at home
- Keep unopened vials, pens and cartridges on a middle shelf of the fridge. The door is too warm and the area near the freezer is too cold.
- Keep it in its carton to protect it from light.
- The vial or pen you are using can usually stay at room temperature for a limited period stated in the leaflet. Write the opening date on it.
- Never leave insulin in a car, near a stove or on a window sill.
Load-shedding and travel
- Short power cutsLeave the fridge closed. It holds its temperature for hours if you do not open it.
- Long cutsUse an insulated box or wide flask with a cool pack wrapped in cloth. Insulin must not touch ice.
- TravellingCarry insulin in a cooling pouch in your hand luggage. Do not put it in a car boot or checked baggage that may get very hot or freeze.
Signs your insulin may be damaged
Do not use
Clear insulin that has turned cloudy or coloured; clumps, crystals or strands; frosting on the inside of the vial; insulin that froze; a cracked vial or pen.
Replace it and tell your pharmacist.
Be suspicious
Your blood sugar runs high for no clear reason after starting a new vial or pen, or after a heatwave or long power cut.
Try a new pack and speak to your doctor.
Some insulins are meant to look evenly cloudy after gentle mixing. Your leaflet says which kind you have.
Checking a pack before you buy
Insulin and other injectables are a target for counterfeiters and for careless storage. Buy from a licensed pharmacy, and check that it comes out of a fridge and feels cool. Look at the seal, compare the batch and expiry on the carton with the vial or pen, and scan the square code if the carton has one. You can also search the product or batch in our DRAP recall alerts.
Needles and sharps
Used needles go into a hard, puncture-proof container with a lid, not loose in the bin. See how to dispose of medicine and sharps.
Insulin storage at a glance
| State | Where | How long |
|---|---|---|
| Unopened vials, pens, cartridges | Fridge, 2 to 8 °C, never frozen | Until the printed expiry |
| In use (opened vial or pen) | Usually room temperature below the limit in the leaflet | The in-use period in the leaflet, often around four weeks |
| Travelling | Insulated pouch, hand luggage | As short as possible in heat |
| Power cut | Closed fridge; then insulated box with wrapped cool packs | Keep checking; do not let it freeze |
A worked example: a summer power cut
It is June and the power goes for eight hours. Sana keeps the fridge door closed for the first few hours. When the outage drags on, she wraps two cool packs in a towel, places them in a small cooler with her unopened pens, and keeps the cooler in the coolest room. The pen she is using stays in its case, out of the sun. When power returns, she checks the pens: no clumps, no frosting, no cloudiness in her clear insulin. She notes the date in case her readings rise in the next few days, and tells her doctor if they do.
Buying insulin safely
- Buy from a pharmacy that keeps insulin in a working fridge and hands it to you cold.
- Check the carton seal, the expiry and that the batch matches on the carton and the vial or pen.
- Scan the square code on cartons made from 9 October 2026; check the registration number and price in our price search.
- Search the batch in recall alerts.
- During shortages, be very careful with unfamiliar sellers. Falsified biological products and injectables have appeared in DRAP alerts.
Injection hygiene
Use a new needle each time, wipe the vial's rubber top before drawing up, and never share pens, needles or vials, even with family. Keep pen caps on when not in use. Dispose of needles in a hard container as described in safe disposal.
Insulin kaise rakhein
Na-khuli insulin fridge ke darmiyani khane mein 2 se 8 darje par rakhein, freezer ke qareeb nahin. Jo pen ya vial istemal ho rahi hai woh leaflet ke mutabiq kamre ke darja-e-hararat par reh sakti hai. Insulin kabhi jamne na dein aur dhoop ya gaari mein na chhorein. Saaf insulin dhundli ho jaye ya us mein zarre hon to istemal na karein. Bijli band ho to fridge ka darwaza band rakhein.
Questions people ask
What should I do with insulin during load-shedding?
Keep the fridge door closed; a closed fridge stays cold for several hours. For long outages, move the insulin into a clean insulated box or flask with a cool pack wrapped in a cloth so the insulin does not touch ice directly. Insulin must never freeze.
Can I use insulin that froze?
No. Freezing damages insulin even after it thaws and looks normal. Replace it.
How long can insulin stay out of the fridge?
It depends on the product. Many insulins can be kept at room temperature, below 25 or 30 °C, for around four weeks once in use. Check the leaflet in your pack, write the date you opened it on the vial or pen, and discard it when that period ends.
How do I know my insulin is genuine?
Buy from a licensed pharmacy that hands it to you from a fridge, check the seal, batch and expiry, and scan the square code on the carton if it has one.
Can I keep insulin in a clay pot (matka) during power cuts?
Evaporative coolers such as clay pots can keep insulin cooler than room temperature in dry heat. They are less reliable in humid weather. Use them as a short-term measure and follow your leaflet's in-use limits.
Insulin fridge mein kahan rakhein?
Fridge ke darmiyani khane mein, darwaze ya freezer ke paas nahin. Apne dabbay mein rakhein taake roshni se bachi rahe.
How do I know if my insulin pen is fake?
Check the carton seal, batch and expiry on carton and pen, scan the square code on new cartons, and buy only from licensed pharmacies that keep insulin in a fridge. Unexplained high sugar readings with a new pen are a reason to talk to your doctor.
Is cloudy insulin always bad?
No. Some insulins, such as NPH types, are meant to look evenly cloudy after gentle rolling. Clear insulins should stay clear. Your leaflet says which kind you have.
Can I carry insulin through airport security?
Yes, in hand luggage with its pharmacy label or prescription. Do not put it in checked baggage, where it can freeze or overheat.
