Hello kitedoc always good to see you!Hi @alphabeta, Based on experience as a TID, not professional advice or opinion.
Just to clarify: you took your Lantus in the early evening and your BSL 2 1/2 hours after your evening meal was 19.5 mmol/l and then at the 3 hours mark (? 3 hours after the meal or is it 2 1/2 +3 hours = 5/ 1/2 hours later) your BSL was 13.1 mmol/l. But what was your pre-meal BSL ?
What about short-acting insulin ? was this taken before your evening meal also? For instance, my Novorapid seems to peak at 3 hours after a meal and unless I delay eating for say, 45 minutes or more, my BSLs can tend to 'escape' the Novorapid's full effect.
The Novorapid seems (always a guessimate) to last up to 5 1/2 to 6 hours.
Also if I eat quick-acting carbs (years ago!! e.g. sweet biscuits etc) my BSL rises quickly , might peak at nearer1 1/2 to 2 hours and still stay high for for sometime before being dealt with and have no sustained effect, compared to if i have Indian food where my BSL tends to peak nearer the 3 to 3 1/2 hour mark and gradually falls over 2 more hours.
On your given insulin figures you have a Lantus dose of 10 units and your short acting insulin per day is about 24 to 30 units.
So do factors like the type of meal or the dose of short acting insulin or the relative proportions of basal to bolus insulin, one or several, have something to do with your results ?
What does your dsn or doctor say? Answers to the above questions might help untangle things ?
My Humalog dose is pretty much consumed by the time I take Lantus. Moving it to the morning seems like an idea and will consider it. Thanks Alison!I think @kitedoc is asking the right questions here. 19.1 is rather high, was that after your evening meal? how much fast acting did you take? It might be that that is causing the drop.
You could move your Lantus dose to the morning, it does tend to have a bit of a peak a few hours after taking it, and you wouldn't have that at night if you moved it to the morning.
Hello kitedoc always good to see you!
To answer your questions, my BGL was 11.8 before dinner at 9:00 PM. Took my Humalog for my meal and it was 19.5 at 11:15PM (I find that Humalog is faster than NovoRapid, more consistent and quickly absorbed). By 11:15PM Humalog is done reducing my BG and I took my Lantus. 1 hour after taking Lantus my BG was 18.4 and 16.0 on a different meter (I trust the 18.4). Another hour later it was 16.3. Another 30 minutes it was 13.1 after which I corrected with fast acting sugar and went to bed feeling all sorts of different stuff. Now, you might say that 13.1 is not low, well true but it was plummeting at an increasingly faster rate, and my sugar doesn't usually drop within 2 hours!. If anything, it rises! So to see a drop just after taking Lantus that's totally mind-twisting!
I have another theory, is there a kind of counter reaction due to low dose in which Lantus does try to compensate against?
Humalog does last for 4 hours as maximum but the lowering effect ends about after 135 minutes for me. I know this by testing.Couple of things....Humalog activity peaks at about the 2 hr mark for most users. It carries on working for up to 2 hours more.
Google 'Humalog insulin profile' for more info. (If I wasn't in my phone I'd give you a link.)
Lantus is known to cause sudden BSL drops. I am not sure if the details (and I might be talking rubbish ) but if my memory is up to scratch, it can sometimes crystallize under the skin and then dissolve suddenly thus causing a large drop in BSL's.
Humalog does last for 4 hours as maximum but the lowering effect ends about after 135 minutes for me. I know this by testing.
Regarding the Lantus drop, any idea how to solve this? I tried new batch new pen etc.. still no positive outcome
I have been given guidance but I am totally okay with Humalog, it is just I ate extra bread that requires 2 extra units. I do know how to calculate my doses properly. I use different injection sites for long and short. I am going to test a new theory tonight which is splitting 10 units into to different sites. 5 units in each thigh. What do you think?Are you receiving any professional guidance with your insulin dosing? It seems to me that something isn't quite right with the numbers you've given here.
I'd suggest that if your BGL rises by 8mmol after eating then your carb to insulin ratio is wrong. The only reason your Humalog stops working after 2 hrs is because you have not taken enough.
Regarding Lantus, where on your body are you injecting long acting insulin? Do you use a different site to short acting insulin?
I have been given guidance but I am totally okay with Humalog, it is just I ate extra bread that requires 2 extra units. I do know how to calculate my doses properly. I use different injection sites for long and short. I am going to test a new theory tonight which is splitting 10 units into to different sites. 5 units in each thigh. What do you think?
My point is to keep the 10 units the same but injecting at different sites because less Lantus will probably pool better in each injection site. I want to test a hypothesis that maybe Lantus is not pooling properly thus causing these fast drops within an hour. Then I could build based on the outcome.I doubt it will make any difference personally.
You cannot expect to see meaningful results from daily changes to basal insulin, it doesn't work that way in the body. Usual advice would be to keep basal changes at least 4 days apart to accurately assess the effect.
Hi @alphabeta,
....................I could not find any reports about sudden or unexplained low BSLs for those taking Lantus but am happy to be proved wrong.
...............
Hahaha the memory is still okay I can remember important events in my diabetes journey! Other than that I barely remember what i had for breakfastI just had a quick look and came up with this although not exactly scientific.........
https://www.healthcentral.com/article/lantus-lows-continued
@alphabeta , there are a couple of other things that might be worth reading :-
https://www.diabetes.co.uk/forum/threads/lantus-and-hypos.59350/
You guys, how's the memory!............
https://www.diabetes.co.uk/forum/threads/lantus-crystallization.155605/
I will read your articles laterYou might want to read these. They discuss how Lantus has a higher risk of hypos and why:
https://www.diabettech.com/lantus/h...hy-you-should-try-tresiba-if-youre-on-lantus/
https://www.diabettech.com/diabetes/lantus-lethal-or-lifesaver-doc-gbdoc/
You might also want to have a read of this about how long insulin lasts. I can guarantee you that you will still have active Humalog in your body at 135 minutes, as fast acting insulins take around 55 minutes to clear 50% of what you've injected: https://www.diabettech.com/insulin/...n-action-dia-times-we-use-and-why-it-matters/
Coming back to your original question, I moved to Levemir from Lantus once I'd identified a similar problem, and was able to use it as a split dose effectively. It brekas down very differently from Lantus, and if you are exercising and finding that you have different overnight needs, it clears from your system much more quickly, so would offer you the ability to be more flexible in your dosing.
For what it's worth, 10u at 2am dropping you from 21 to 10.3 9.5 hours later doesn't necessarily indicate that you're having too many problems with absorption. That is more likely to signify that your dosage is wrong. When Lantus doesn't pool correctly, those drops occur over a few hours (less than three in my experience, and you can find yourself going from 12 to 3 in that time.
Hello @kitedocHi @alphabeta, As suggestions, not professional advice or opinion, what @tim2000s has to say and quote is well worth reading.
I had not come across the comparison trial of Tresiba vs Lantus ( his first reference) and the results appear to me to be disturbing regarding Lantus's tendency to cause more hypos.
A trial comparing Lantus to Levemir and Levemir to Tresiba would have been nice to have if that had been possible!!
I have never been prescribed Lantus as my doctor at the time opined that Levemir had a more flexible dosing and adjustment regime, as @tim2000s mentions, and there was concern at the relative tendency for Lantus to stimulate cell growth compared to Levemir. mcgill.ca Insulin analogues and cancer: a cause for concern or cause celebre? Pollak and Russell-Jones Int J Clin Pract 2010, 64, 5.
The second reference about onset of earlier than expected and more severe hypos with presumed injection of Lantus into muscle, instead of subcutaneous tissue is something I believe you may have experienced (trying to remember the thread?). What I would query is whether the same problem would occur to the same degree with injection of any long-acting insulin into muscle. The admonition to avoid injection of insulin into muscle seems clear (at least unless specifically ordered with short-acting insulin).
The third reference and point raised about duration of insulin action and the fact that with basal-bolus regimes there are insulin on board type effects whenever a short-acting insulin is injected during the concomitant action of basal insulin. That fact and the graphs illustrating it may help explain your BSLs in your initial post of this thread.
My further take on things is that you seem to have varying times that you take your Lantus, you mention the episode (? or more) of lack of access to insulin and the pressures of study.
Although basal-bolus/ multiple daily insulin doses gave me greater flexibility in my early working years, in order to keep control of my BSLs I still needed to have regular timing of injecting my basal insulin and ensure I did not become sleep deprived.
I would not expect my long-acting insulin to deal with high BSLs alone and knew from experience that high BSLs took time to be corrected even with use of short-acting insulin. The longer and higher the BSL remained to more risk over time of later problems.
I would suggest your ability to achieve and manage your study is unlikely to be helped by continually high BSLs, an irregular insulin regime and ? irregular meals. It cannot be denied.
I know this may not be what you wish to hear but in my early working life as a trainee doctor in hospital where things can easily become chaotic it was clinging to as regular an insulin and food regime as possible that make it possible for me to survive.
Please see/find a dsn and doctor who you can discuss your diabetes management with, who can discuss with you the pros and cons of your current insulin and regime and how to keep as much balance as possible on the tightrope of diabetes control.
Sincere and Best Wishes !!
It won't. the way that Levemir and Tresiba work is outlined in that article. They have no need to form a precipitate and can circulate in the blood happily, as the way they work is to cause the body to "unfold" them over a period of time, negating the risk of fast absorption.What I would query is whether the same problem would occur to the same degree with injection of any long-acting insulin into muscle.
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