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 Happy Hour B12 Vitamin Shots Santa Rosa, Sonoma, Mendocino The Naturopathic Integrative Medical Clinic of Santa Rosa 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 B12 Injections: How Often Should You Take Them? Invigor Medical