How Often Should You Get Vitamin B12 Injections? Benefits of B12 Injections for Optimal 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 B12 Shots for Weight Loss: What You Need to Know ISSA When that Vitamin B12 injection kicks in , B12 helps boost your energy, improve mood, support brain function & metabolism, and even strengthen hair, skin + nails , Who doesnt love a healthy