Vitamin B 12 Injections In Hamilton Estetica MA B12 Injections vs Oral Supplements: Which Is Better for Energy and Deficiency? What Are B12 Injections? And Are They Safe? OmegaQuant B12 vitamin Store Intramuscular vs Subcutaneous Injections for vitamin B12 supplements. 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