What are the alternative forms of vitamin B12 (cobalamin) injections besides cyanocobalamin? B12 Injection sites + How to use B12 Shots Safely B12 Injections vs Pills Baltimore: Which Works? Vitamin B12 Injections vs. Supplements: Which is Right for You? Who Should Take Vitamin B12 Injections And Why? If you have a low vitamin B12 level, injections can go a long way toward improving your health and well being. But if your B12 level is normal, don't fall for claims that