Low Vitamin B12? Diet vs. InjectionsWhat Works Faster? Curious about B12 shots? The Wellness Center 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 Compounded Methylcobalamin (Vitamin B12) Injection, 5mg mL Benefits of a Vitamin B12 Injection, Vitamin B12 injections are commonly used for people who are deficient, struggle to absorb B12 from tablets, or require a faster and more effective boost., Helps