Why does my night time insulin sting me so much after injecting?

Might be bleeding. The blood that contacts tissue is very painful so hold pressure longer and take orally vitamin k2 supplements help u not to bleed into inj site available as bio-k forte from biotics research.

Related Questions

Why does my night time insulin sting me so much after injecting?

Which insulin? If this is Lantus (insulin glargine) (glargine) Insulin it stings because it is at an acidic ph to give it a 20-24h time for absorption.