Type 1 Why can’t you inject until 4 hours?

Alex_B

Well-Known Member
Messages
168
Type of diabetes
Type 1
Treatment type
Insulin
I don’t understand which I should, having diabetes for 3 years. But why can’t you? What about correction doses? I’m mostly running high but with having the Freestyle Libre I’m checking constantly and need to have correction doses but my nurse told me I can’t do it for 4 hours? Help?
 

Emily95

Well-Known Member
Messages
98
Type of diabetes
Type 1
Treatment type
Insulin
Because that’s typically how long it takes fast acting insulin (like novorapid) to be out of your system. I don’t ever inject if it hasn’t been 4 hours since my last novorapid because I don’t like stacking doses, stacking tends to lead to lows then highs then lows then highs. I find it’s best to give it the 4 hours to work.
 

searley

Well-Known Member
Retired Moderator
Messages
1,880
Type of diabetes
Type 1
Treatment type
Pump
Dislikes
Diabetes, not having Jaffa Cake
I inject as little as 2 hours..

If I have under estimated my food intake and my bg is the same or higher after 2 hours I will have more

But as said above it can last in your system for upto 4 hours so if you dont allow for this you could end up having a hypo

Another thing I was told was never inject without food.. but I do if needed