How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust 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 PDF] Diagnosis & Management of Vitamin B12 Deficiency in Primary Care Are we following the guidelines? Semantic Scholar B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics