B12 Injections Energy Boost Healthy Hair & Skin Derby Vitamin B12 Injections Energy Boost The Center Medical Folic Acid 800mcg with Vitamin B12 365 Tablets High Strength Supplement Women Health Pre Pregnancy Supplements, B12 for Women : Amazon.co.uk: Health & Personal Care Vitamin B12 is required for the function and development of many parts of the body, including the brain, nerves, and blood cells Since your body doesn't make vitamin B12, you have to Methylcobalamin Injection (Vitamin B12) Empower Pharmacy Vitamin B12 injections deliver high doses of this essential vitamin directly into your bloodstream for better absorption than oral supplements to boost energy, support red blood cell production and maintain nerve function.