Vitamin B12 Injection Dose for Weight Loss: What Does the Science Say? AlabamaAgeline.gov Vitamin Injections Des Plaines, IL Vitamin Deficiency Treatment Optimal Vitamin B12 Dosage and Treating Deficiency Rationale for VeganHealth's B12 Recommendations Vegan Health 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 Best supplement for low b12 levels?