The Levemir leaflet says it should last 6 weeks.I use the cartridge too, and the only problem I’ve encountered is that the strength of the Levemir seems to tail off after ten days, even though I keep my pens in a Frio. (It’s ‘supposed’ o last for fourteen.) In the words of the Consultant I see, “If in doubt, dump it.”
I’m using the novopen 5 at the moment. If the cartridges are the same I think I will change. It would be nice to waste less plastic!I don’t think mine does, just last dose, but since Fiasp and Levemir are made by the same firm it should be available? What pen are you using?
Levemir should last just over a month once out the fridge and in use as long as kept within the temperature range indicated. 10 days seems a very short time period for the performance of the Insulin to start dropping, and should last well past 14 days without problems.I use the cartridge too, and the only problem I’ve encountered is that the strength of the Levemir seems to tail off after ten days, even though I keep my pens in a Frio. (It’s ‘supposed’ o last for fourteen.) In the words of the Consultant I see, “If in doubt, dump it.”
The brown Levemir sounds really odd. Luckily never seen or heard of that with any Insulin I've used during almost 30 years being Diabetic.I use levemir cartridges they have been rock solid. I dislike prefilled pens the space they take in my fridge is very wasteful.
In 20 years of insulin use the only certain insulin I had, was when some insulin went brown in my fridge in March 2020. I returned it to my pharmacy. The pharmacist sad she's never heard of the problem. She took the insulin off me and raised some formal medical paperwork - I think she reported it as the equivalent of a "near miss" that was in March in the middle of covid.
We still have had no response.
If you are finding the efficacy of levemir variable, apart from consulting your pharmacist, I would ask for an appointment with Diabetes specialist nurses to review for external factors and how to deal with the issue when it happens again.
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