B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Vitamin Deficiency Injectable System B12 Come and prepare for a B12 Injection with me , Vitamin B12 is my most popular Vitamin injection with clients returning for the boost it gives! Main benefits of B12 injections 1) Increased energy & reduced fatigue B12 helps convert food into usable energy Deficiency often causes tiredness, weakness, and low stamina 2) Healthy red blood cells Prevents