9 Factors That Affect How Insulin Works


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Where did you inject it?

Insulin acts the fastest when injected into your abdomen—just above and to the side of your belly button.

Insulin gets into your system a bit slower when injected in the upper arms, even more slowly in the legs, and slowest from the buttocks.

For best results, inject in the same general area before each meal. For example, you can inject in the abdomen at breakfast and the thigh before dinner.

Make sure not to inject in exactly the same spot each time, however, as scar tissue could build up and affect insulin absorption.

Next: What time did you inject?

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