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Insulin is a fragile molecule and can be broken down by light, heat, or even motion. The expiry date isn't a precise guess about when the insulin will stop working, but as insulin approaches and passes its expiry date, it will become less and less effective.

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13y ago
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Wiki User

8y ago

according to this site (, insulin loses strength when out of date. This would appear to be true as I have just realised why my blood sugars been high this week - my insulins out of date! Oops...

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Lvl 1
3y ago

Yes it does

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Q: What happens if you use an insulin pen that's out of date?
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Related questions

How do you give insulin?

Insulin pen is like having an old-fashioned cartridge pen in your pocket, instead of a writing point, a needle, and for ink cartridge, an insulin cartridge. You just turn a dial to measure out your dose.

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If you mean insulin pen. Mine contains. Plastic. Aluminium. Glass. Rubber. The insulin itself. and the needle is stainless steel.

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Can you get ink poisoning from stabbing in your vain with a pen?

...thats kind of psychotic...

What makes up a pen?

ink and plastic and more ink and plastic thats it

Is pen a common noun?

Yes, the noun 'pen' is a common noun; a general word for an instrument for writing or drawing with ink; a general word for any of various other pen-shaped devices (insulin pen or laser pen); a general word for a small enclosure for animals; a word for any pen of any kind.The word pen is also a verb: pen, pens, penning, penned.

How many units are in the Solar Star Lantus Pen?

5 pens come per pack. Each pen contains 300 units of insulin (3 ml with 100 units per ml)

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you cant, theres no gravity. the pen doesnt fall, it floats away

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Your ink drys out.

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