Does Vitamin B12 Injection Hurt Complete Guide by M.A.L How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Lets do my first B12 injection together This is something Ive been nervous about for a long time, but today I finally did itand it honestly wasnt bad at all. I used the Union Medico needle guide B12 Shots Side Effects And How To Treat Them Still getting irritation, pain, or leakage after your intramuscular shot? It might not be youit might be your technique. Most folks have never been taught the Z Track Method, but this simple