Vitamin B12 Injections: Benefits, Safety & How They Work Come along with me, as I give myself my weekly vitamin B12 shot. #vita Vitamin B12 TikTok 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 How To Give Yourself an Intramuscular Injection IV Me Now FL B12 Shot: Step by Step Guide for Self Injection TikTok How to Give a B12 Injection: Step By Step Instructions