23/04/2022

NovoRapid v Fiasp

Starting with a disclaimer. This is my own personal experience and may not necessarily reflect how different insulin products will work in your body. 
In December my diabetic nurse changed my insulin. Long acting was changed from Lantus to Tresiba and fast acting was changed from NovoRapid to Fiasp. I started Tresiba straight away even though I had a full box of 5 lantus pens left. I gave the lantus to my nurse to give to another patient. I was halfway through a NovoRapid box so decided to wait until they were finished before starting Fiasp. I could see a change, for the better, in control of my blood sugar after only a few days of being on Tresiba. 
About a month later I started Fiasp. I took one less unit than I would have for my first meal with it. I was a bit high after so topped up with a couple of units as I would have done with NovoRapid. I was high before taking Tresiba that night. 
There was another time I needed to go somewhere one afternoon after eating my lunch. I checked and was over 11 so felt sure I could get there and back without worrying about a hypo. I got half way to where I needed and felt low. Both freestyle libre and meter confirmed I was hypo. So I sat on a wall (the weather was fine) and took a few glucose tablets. Once my blood sugar was back up it was too late to get where I needed so I popped into a nearby shop to get a snack in case of another low and went home. My blood sugar was in the high teens when checking before my next meal.
Here's what Fiasp felt like to me. The more I took the longer it felt like it lasted in my system but it never lasted as long as NovoRapid. It acted too quickly to be effective on slow release carbs at times. Whereas if I took 2 units of NovoRapid it'd last as long as 12 units even though the effects would be proportionately different. I needed less units generally to cover a meal with Fiasp but the effect of NovoRapid is more consistent. Once I was out of range under Fiasp it was a lot more tricky to regain control. But in range it felt pretty good. 
I asked my diabetic nurse to send me a new prescription for NovoRapid when I was coming to the end of my supply of Fiasp because I didn't like Fiasp overall. 
I'm back on NovoRapid now and I think NovoRapid and Tresiba are the best fast and long-acting insulin combination for me.

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