Switched from Nova to fiasp

[Jimmy2202]

Hi I’ve just got my first lot of Fiasp.

I have a half unit pen, going to do a correction to begin with to see its effect.

Novarapid was taking about a hour to work and was a pain in back side as I tend to correct more than pre bolus as on a low carb diet.

Any advice with fiasp to consider?

I go gym most days and this obviously rises my levels all the time so I’m hoping the quicker acting fiasp will be better.

With novarapid I was told to leave 2 hours before injecting it again, what’s the window for fiasp?

Ta

 

[helli]

Any advice with fiasp to consider?

The thing that took me the longest to get my head around when I first transitioned is the speed at which it works is not consistent. For me, it is very dependent upon my BG.
So, feel free to do a 0.5 unit correction to see how it works but don't expect it to work that fast (or slow, especially if you are doing a correction) at all BG levels.
I find
- if my BG is between about 4.0 and 5.2, it works instantly. It works faster than I can digest food. I need to bolus after eating.
- if my BG is above 9.0 and, especially, if my BG is in double figures, it can take 30 to 90 minutes to show any change un my BG. So, I will try to check my BG about an hour before I plan to eat and do a correction then rather than waiting for my food. This is easier with a pump than injecting. It does mean Fiasp is not ideal for corrections so I try to keep a closer eye on any rises.
- if my BG is between 5.2 and 9.0, Fiasp works at about the same speed as my digestion and I can bolus just before I start eating.

The other thing I found with Fiasp is that it does not last as well out of the fridge for as long as NovoRapid. I certainly do not keep it in the fridge but have found it can appear to lose its potency if it has been out of the fridge for more than 20 days.

I go gym most days and this obviously rises my levels all the time so I’m hoping the quicker acting fiasp will be better.

I guess it depends what you do at the gym. Most of the time, I do more cardio so my BG falls. rather than rises.
The exception is climbing where the combination of resistance training and adrenaline causes my BG to rise. Before I started pumping, I would proactively counteract the rise with a "correction bolus" before starting where I calculated my correction for a BG of 3 under "normal conditions". The liver dump ensured I didn't reach those hypo levels. This was before I transitioned to Fiasp - I was using Novo~Rapid at the time,
With my pump, I handle it differently: I increase my basal to account for the liver dump.

With novarapid I was told to leave 2 hours before injecting it again, what’s the window for fiasp?

I am not sure whether this is related to 2 hours after the gym to manage the potential BG drop after exercise or 2 hours after your last bolus to avoid stacking.

With regards to injecting after exercise, I have never done it any different to injecting after slouching on the couch. I reduce my basal to account for the increased insulin sensitivity after exercise.

With regards to leaving 2 hours between bolus, I am not your "model diabetic" and never have been.
I have no problem with "stacking" if I am eating within that 2 hour window but will take the IOB into consideration when calculating my dose.

 

[Jimmy2202]

Thank you for reply. Most helpful

 

[mashedupmatt]

I also switched from Novorapid to Fiasp - for me it has been much better as it starts working so quickly, and only tends to last around 3 hours, almost eliminating hypos beween meals which I had with Novorapid - the downside is if my BG is high before I eat, it's not as effective - but overall I am more than happy with it - some people get on with it, some don't, because we are all different but I wish you all the best with it

 

[rebrascora]

Like @helli, Fiasp works reasonably quickly at low BG levels for me although I still need to prebolus even when in the 4s, but I find that it is almost like it turns to water when my levels are above 10 so I am pretty proactive about keeping it below 10 to the point that I will stack corrections if necessary. For me on a low carb way of eating, I have my high alarm set at 8.2 and generally, if the high alarm goes off I inject 2 units, if 45mins later it is still rising I will inject another couple of units. I found that I had to be pretty heavy handed with it to make it work for me and I found it very frustrating at first until I learned to be heavy handed. In fact it took me 2x 3month frustrating trials before I managed to work out what I needed to do, but now I understand how my body responds to it, I wouldn't go back to NR. I also like the fact that it is finished acting in 3 hours for me, sometimes nearer 2 hours, whereas NR was active for nearly 5 hours.

 

[nonethewiser]

Find fiasp works better for me than novorapid did, it's slightly faster but doesn't hang around for as long which is another bonus.

Have only used fiasp in pump so no experience using it with injections.

 

[everydayupsanddowns]

Hope it works well for you @Jimmy2202

There are quite a few on the forum who have found it a real game changer once they get used to a few quirks.

Keep an eye on your sites, and watch for any signs of doses needing to creep upwards after a few weeks (along with the speed of action disappearing). Those seem to be common traits for a small minority of us that seem to develop a reaction to the special sauce they put in Fiasp to speed the Aspart up.

 

[Jimmy2202]

Appreciate the reply’s guys 🙂

I’m going to trail tomorrow at work as work is my comfort and happy place so I’ll be in a better mind set to monitor as that’s my day to day shiz.

Thanks again