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Low carbing with Fiasp

SamJB

SamJB

Well-Known Member
Messages
1,857
Location
Chester
Type of diabetes
Type 1
Treatment type
Pump
I'm considering switching from NovoRapid to Fiasp and I'm wondering whether it would be too aggressive for low carb meals, since I am a low carber. I've see the odd post about this over the past year or so, but nothing conclusive, so thought I'd ask again.

I'm happy with NR, I'd just like something that works a bit faster to get rid of the occasional highs that I get.

Also, are there any other changes that people of have notices switching from NR to Fiasp?
 
IMO just go for it, especially if you're already managing your own doses. It might not be as fast as you like - it's not completely magic. I've been using both for the past few months, last vial of NR will be empty soon! No compatibility issues I noticed. If it doesn't work for you, shouldn't be hard to change back.
 
I’ll be switching in a couple of days.
I have seen reports of Fiasp not suiting some people but it seems the only way to find out is to suck it and see. The reports seem to suggest you’ll find out pretty quickly if it doesn’t work for you.
I have a spare vial of NovoRapid on hand if I have problems.

However, if you are on low carb, your spikes may be no higher than someone without diabetes. There are a few Libre graphs from people without diabetes on the internet. They go over 9 mol/l which convinced me not to over obsess if I spike at a similar level.
 
Hi,

@tim2000s sort of "pioneered" Fiasp when it first came out? He's tagged in hopefully for a comment.

I've not used it myself. But I do use novorapid & Lantus. & find Novo works it's profile with the nominal amount of carbs I consume. But not all metabolisms or lifestyles are the same. :)
 
Have been on Fiasp since middle of November. It isn’t super fast, but faster for me than Humalog. I don’t ultra low carb but don’t eat above 100 in a day. I’m in the blue section of my Libre more than I used to be.
 
I've only ever low carbed with Fiasp when using OpenAPS, which was brilliant as I never really needed to announce food or bolus. It managed everything pretty perfectly.

What I would mention is that while you see Type 1 Grit people showing perfectly flat lines whilst low carbing, I've never managed to achieve that effectively. A combination of Stress, lack of sleep (ie stress), anaerobic exercise (ie stress) and protein generally mean that I can easily start to climb, so I've always had to do some level of sugar surfing with low carb. Yes it's less, but its never been as straightforward as some people would have you believe. But then, I've got a ****ed endocrine system, with rubbish signalling, so that's perhaps less of a surprise than it should be!

Coming back to your question about low carbing with Fiasp, yes I see no reason not to be able to, and the lower doses are likely to show fewer of the issues that some of us have seen, but I wouldn't do it without a CGM sensor attached to understand the patterns that were prevailing and how I'd dose for them with it.
 
Really useful replies, thanks! Good idea to keep a load of NR in case it doesn't work out. I've got to get registered with a DSN first (haven't seen one in about 10 years), so might take a while.

@helensaramay, that's really interesting, I had no idea what a non-diabetic's BG curve looked like. Mine's not too dissimilar to be fair.

Whilst my control is good, and I don't really spike from food, it's more about correcting mistakes I've made faster than what NR would do. Maybe the old saying "if it's not broke, don't fix it" might be true, but I'll give it a go to see if it makes things better.
 
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