I recently started using Levemir. (See thread: Lantus and Levemir comparison)
I ultimately ended up using both Levemir and Lantus (not mixed, but at different times), but when I first started with Levemir, I was using only it, and I did 2 injections, morning and night.
When first starting, it took me some time to get the right dosage. The same dosage of Levemir and Lantus didn’t work. Levemir seemed “stronger” than Lantus, and I had to reduce the amount I took.
I also noticed that Levemir did not last as long as Lantus.
So I had a bit of a light-bulb moment on it. Perhaps I was wrong in thinking that it was not as strong. Maybe the strength of Lantus and Levemir were the exact same, but what I was seeing was a difference in how long it lasted…
So when I looked at the numbers, they made sense, they matched up perfectly.
Let me give an example:
- For me, Levemir lasts 12 hours, and Lantus lasts 16 hours.
- And what now seems to not be a coincidence, 6 units of Levemir seemed to have the same effect as 8 units of Lantus.
So perhaps “strength” is the wrong idea. Look at how these numbers work out.
Because figuring out the exact duration for basal insulins is one of the most challenging things people have to do, this is possibly a very useful thing to consider. If you know one, it can help you calculate either a dosage conversion or a duration difference.
As a side note:
Going further, as just conjecture and something to toss around, is all insulin - basal or rapid - the same “strength”, it just comes down to how quickly it works?
Example:
Someone says they need more NovoLog than they do Apidra. Maybe it’s just slower not weaker.
I am not staying this is true, but I wanted to put this thought out as a mental exercise. What can you come up with?