where to inject vitamin b12 shots How Give a Injection: Step-By-Step Instructions Vitamin B-12 Intramuscular Injection —

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

If your B12 level is found to be below normal, replacing that vitamin B12 is very important, explains family physician Kenneth Goodman, MD

Experts do not recommend this site for self-administrated injections

How Painful is a B12 Injection

Allergic reactions, such as a rash, itching, swelling, or redness, happen due to high vitamin dosage or as a response to the needle coating

B12 shots can be both subcutaneous and intramuscular