Vitamin B12 Therapy for Enhanced Energy Levels Cyanocobalamin (Vitamin B12) Injection 1000 mcg mL, Multiple Dose Vial 1 mL, 25 Tray McGuff What are Vitamin B12 injections Vitamin B12 injections are used to quickly raise your B12 levels when they're low or when your body can't absorb it properly from food or tablets. What Do you know the benefits of a b12 vitamin injection? Do you constantly feel tired and fatigue? Are you suffering with low moods ? If you answered yes then we can help !