This is very interesting, as I'm looking into changing from U200 to U100 (because of refillable pens with a memory for last dose), and theoretically the dose should be the same, an insulin unit is an insulin unit, U100 is just more diluted than U200.Hi I have been on Tresiba200 for 2 months, bear in mind that there is also Tresiba100. I was on 56 units of levermir split over 2 doses. Initially my suggested dose for tresiba200 was 48 units, however this caused many hypos and I was having to eat and drink a lot more sugary things and that was without taking any novarapid.
I'll have to be patient though. While my U100 will arrive next week, I still have a huge stockpile of U200 (due to a lowering insulin need) which needs to be used up first.
I'll keep in mind I may not need the same amount when switching!