B12 Injections for Energy: Benefits and How It Works AZ IV Medics B12 Shots: Vitamin B12 Injections Benefits, Uses, Risks Dr. Axe B12 Injections at Home Safety Guide for Self Administration Infusion For Health B12 injections have been high on my list, and I finally took the plunge today! Better absorption is just one of the perks, as it bypasses the stomach. Bloodwork is typically not Vitamin B 12 intramuscular injections are also used therapeutically to help restore energy and combat various symptoms related to such deficiencies. Vitamin B 12 is essential to the development of healthy blood cells, nerve B12 Shots & B12 Injections: The Good, Bad and Alternative!