How Long Do B12 Injections Last: 5 Ways to Extend Effects Vitamin B12 Deficiency Anemia: Symptoms, Causes, Treatments Fun Fact Friday! Ever wondered Why is my B12 injection red? All B12s are cobalamins they have a cobalt atom at the center of a special ring shaped molecule called Not all shots are the same here's a guide Injections are a fast, effective way to deliver medications, nutrients, and vaccines directly into the bodybut not all injections are the