Vitamin B12 Self Administration Tutorial (thigh) B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics 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 Injection Frequency: How Often Should You Get a B12 Shot? Liv Hospital How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Vitamin B12 Injection Dose for Adults: 7 Key Facts on Dosage & Frequency Liv Hospital