Do You Need a Prescription for B12 Injections? OmegaQuant What are the benefits of B12 injection? Blades Wellness Vitamin B12 shots can be administered to treat B12 deficiencies causing symptoms including chronic fatigue, commonly seen in megaloblastic anemia. Vitamin B12 is also important to prevent damage to nerves. B12 Vitamin B12 Injection We Come to You ASAP IVs IV Hydration Experts of San Diego, Phoenix, Scottsdale, San Francisco Vitamin B12 Injections: What You Need To Know B12 Injection Dosage and Frequency: 7 Essential Guidelines for Adults Liv Hospital