Hypercobalaminuria' Is urinary cobalamin loss a potential determinant of parenteral cobalamin (B12) efficacy in Pernicious Anaemia? ScienceDirect Do You Need a Prescription for B12 Injections? OmegaQuant B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Are B12 Injections Safe? Should I Get A B12 Shot? Seeing Red: Do B12 Injections Work? LAmag Vitamin B12 deficiency, sometimes called cobalamin deficiency, happens when your body is either not getting enough or not absorbing enough vitamin B12 from the foods you eat. Vitamin B12 is an important