The most common B12 subcutaneous injection sites are the following: The upper arm To self-administer a B12 injection into the arm, pinch a thick skin layer of the side or back of the upper arm and insert the needle at a right angle
For most people, the safest answer is no, not without clinical guidance and a confirmed reason
Here are the best vitamin B12 injection sites for each method: Subcutaneous B12 injection sites Usually, the best places to give yourself a B12 shot subcutaneously are the abdomen, thigh, and upper arm, as you can see in this illustration: Although not shown above, the buttock is another good site for B12 shots
A B12 deficiency can cause a variety of health problems, so it's often used to treat or prevent it
You're experiencing any kind of infection
Needle size, injection site, and dosage will differ for every individual