How to store insulin in Pakistan's summer heat

Insulin is a protein, and heat breaks it down. On a 45°C day, insulin left in a car, a bag or a sunny room can lose strength without looking any different. The result is high sugar levels that seem to have “no reason”. Here is how to protect it.

Unopened insulin: keep it in the fridge

• Store unopened vials and pens in the main part of the fridge, between 2°C and 8°C.
• Never freeze it. Keep it away from the freezer compartment and the back wall where ice forms. Insulin that has been frozen must be thrown away.
• Keep it in its box, away from light.

In-use insulin: room temperature, but not hot

The pen or vial you are using can usually stay at room temperature for about 4 weeks (some products longer), as long as the temperature stays below roughly 30°C. Check your insulin's leaflet, because the exact time and temperature differ between brands. Write the date you opened it on the pen or box.

When the room is hotter than 30°C

In many Pakistani homes, summer room temperature is above 30°C, especially during load-shedding. In that case:

• Keep the in-use pen in the fridge too, and take it out a few minutes before injecting (cold insulin can sting).
• Use an insulated insulin cooling pouch or cool bag when you are out.
• During long power cuts, a clean clay pot (matka) with water in the outer part keeps things cooler than a room; keep the insulin dry inside a sealed bag.

Never leave insulin

• in a parked car, on a dashboard or on a motorbike
• in direct sunlight or on a window sill
• next to the stove, a generator or the back of the fridge

How to tell if insulin has gone bad

Clear insulins should stay clear; cloudy insulins should mix evenly and have no lumps or frosting on the glass. Throw it away if it looks different, was frozen, or was exposed to strong heat, even if it looks fine. Unexplained high readings are also a warning sign.

Travelling and Hajj/Umrah

• Carry insulin in your hand luggage, never in checked bags (the hold can freeze).
• Take a doctor's letter and a cooling pouch.
• Carry spare needles, a glucometer and quick sugar for lows.

DawaaiMart delivers insulin and pen needles carefully. If you are unsure whether your insulin is still good, message our pharmacist.