Recently I have been asked a lot for VitaminB12 injections. I initially decided not to offer vitamin B12 injections as some literature showed that the efficacy of oral vitamin B12 was the Vitamin B12 injections deliver high doses of this essential vitamin directly into your bloodstream for better absorption than oral supplements to boost energy, support red blood cell production and maintain nerve function. B12 Injections vs Pills: Richmond's Complete Guide Vitamin B Shots Sunlife Vitamins