Compounded Hydroxocobalamin (Vitamin B12) Injection What are the benefits of B12 injection? Blades Wellness B12 Injections vs Tablets: Key Differences Explained Vitamin B 12 intramuscular injections are also used therapeutically to help restore energy and combat various symptoms related to such deficiencies. Vitamin B 12 is essential to the development of healthy blood cells, nerve The Advantages of B12 Injections Versus Oral Supplements: Shawn Veiseh, M.D.: Family Medicine