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 Vitamin B12 Injection Dosage for Adults: 7 Key Medical Guidelines Liv Hospital Vitamin B12 Oral vs Injection Vitamin B 12 Injection Mobile and Clinic IV Therapy ASAP IVs IV Hydration Experts of San Diego, Phoenix, Scottsdale, San Francisco Vitamin C Shots or B12 Shots: What You Should Know Beauty & Body By Mia Vitamin B12 Injection at BiosenseClinic.com a Licensed Pharmacy