Vitamin B12: How Frequently Should I Get It? URBAN Medical Fishersville, VA and Gilbert, AZ B12 Injections at Home Safety Guide for Self Administration Infusion For Health How Often Should I Get B12 Shots? A Guide to Your Schedule B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics How often should vitamin B12 injections be administered and how frequently should laboratory monitoring be performed?