Vitamin B12 Monthly Injection Dose: Typical Dosages & Administration Methods Liv Hospital B12 Injection: Boosting Energy and Beauty Med Spa Vienna Medical Spa Tysons Corner Rejuvenation Clinic 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 Energy Shot The IM Shot Series Ever wonder why B12 shots are red? Here's the scoop! , B12 injections naturally have a deep red color due to the presence of the cobalt corrin complex, a key component of its molecular structure.