What are the benefits of B12 injection? Blades Wellness B12 Injections vs Pills Baltimore: Which Works? 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 A vitamin B12 injection is a shot that delivers B12 directly into your muscle, helping your body absorb it quickly (especially if your body struggles to absorb it from food or tablets) Are Vitamin B12 Shots Right for You? What Are B12 Injections? And Are They Safe? OmegaQuant