Are you feeling run down? Low Energy? A quick Vitamin B12 injection can help support energy, metabolism, and overall wellness. It delivers the vitamin directly into the muscle, allowing your body to B12 Injection sites + How to use B12 Shots Safely Subcutaneous Injection: What It Is and How to Give One How to Administer an Intramuscular Injection at Home Dr. prescribed B12 injections. Pharmacy only gave me vials. Where do you get your needles and syringes? What size?? Where do I inject? : r B12_Deficiency