Vitamin B12 Injections Energy Boost The Center Medical Hydroxocobalamin V. Prolonged Maintenance of High Vitamin B12 Blood Levels following a Short Course of Hydroxocobalamin Injections ScienceDirect Vitamin B12 Transport in Blood. I. Congenital Deficiency of Transcobalamin II ScienceDirect A Study of Vitamin B12 Requirements in a Patient With Pernicious Anemia and Thyrotoxicosis: Evidence of an Increased Need for Vitamin B12 in the Presence of Hyperthyroidism ScienceDirect 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