How to speed up your insulin absorption


Anyone ever tried a hair dryer heat to speed up insulin absorption?
I know exercises do but I am sick of exercising all the time.


Massage, heat, exercise, or movement of the injection site will help speed it up.

Intramuscular injection is also faster.




I have heard that a hot shower will speed up absorption as well.


I believe the size of the bolus also impacts absorption. Smaller boluses have more surface area than a single larger bolus.


A long hot shower almost always drops me roughly 30-40 points. If it’s a short shower, and not overly hot, I don’t notice a difference between pre and post shower numbers. Having IOB makes a difference to the results, of course.


True. That’s why Bernstein recommends splitting large boluses into smaller ones.

Also as mentioned above, IMs are faster.


IM + a short run make a huge difference. We just started experimenting with it.


Sorry I have only heard that injections into large muscle area you might be using would help the speed of absorption. I always as a teenager would use my right arm if sugars were higher than I wanted, as I played badminton and used that arm for hours of practice. Or if running would use my legs.
I have also heard hot showers could help but never really tested it. Could be an interesting test.


If you want to see if a hot, long shower lowers your bg, I suggest making sure to spend a fair amount of time with the hot water flowing over your insertion site (or injection site, if not on a pump). Bear in mind that I suspect (just a guess) that the results between pumping and MDI are going to different because pumps only use short acting insulin, which should drop bg’s faster than if you have no IOB on injections, and therefore don’t expect the hot water to make your long acting insulin drop your bg’s from the application of hot water as much as it would from fast-acting insulin always in your subq if on a pump (even if you have no IOB–you still have basal insulin in your tissues) Make sense? If not, i can expand on the topic.


Agreed, but if you’re in a hurry you’re most likely to be using fast acting insulin anyway.