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 5 Amino 1MQ (5mg): Peptide for Metabolism Pepsynth Labs Vitamin B 12 Injection Mobile and Clinic IV Therapy ASAP IVs IV Hydration Experts of San Diego, Phoenix, Scottsdale, San Francisco How to Give a B12 Injection: Step By Step Instructions