Sterile Water for Injections Farris Laboratories 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 Sandoz Vitamin B12 Injectable Solution 1000 mcg 10 mL Vitamin B12 How Quickly Does a B12 Shot Work? No More Tired PA Relief Compounded Hydroxocobalamin (Vitamin B12) Injection