b12 injection spots Best Vitamin Sites? How to self-inject intramuscular vitamin
Description
Make sure there is no air trapped inside and no blood when you pull on the syringe slightly

Staying well-hydrated and resting for a short period post-injection can help alleviate these feelings
You may wish to print it out for ease of reference

These risks are exactly why an intramuscular injection is safer given by a trained clinician than self-administered at home