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 Vitamin B12 Shots in Canton, MI: What You Need to Know Benefits of Vitamin B12 Injections for Skin What is the recommended frequency for monitoring Vitamin B12 levels in patients receiving intramuscular (IM) Vitamin B12 injections for replacement therapy? B12 level 99 ng L. Is this really low or just a little low? How often for injections? : r B12_Deficiency