How to Give a B12 Injection: Step By Step Instructions NEW TREATMENT ALERT A vitamin B12 injection helps treat or prevent deficiency by delivering the vitamin directly into the bloodstream. It's often used for people with absorption issues and is usually safe What are Vitamin B12 injections Vitamin B12 injections are used to quickly raise your B12 levels when they're low or when your body can't absorb it properly from food or tablets. What Benefits of B12 Injections Clinic Poster Etsy B12 Injection sites + How to use B12 Shots Safely NOW OFFERING B12 INJECTIONS B12 injections are an all natural energy and metabolism Booster Your body needs Vitamin B12 to make red blood cells which carry oxygen around the body