b12 oral or injection Injections vs Supplements: Which are more effective? Vitamin B12 Injection: Energy Boost

Key takeaways Vitamin B12 shots are injections that a doctor may prescribe to treat a vitamin B12 deficiency

Serious adverse events are not reported in the literature

Allergic Reactions : Although rare, some people may have an allergic reaction to the ingredients in the injections

Your ideal timing will depend on your routine and clinician guidance

B12 plays many important roles in the human body, including: Nerve function Brain health Red blood cell production DNA synthesis Energy production Some people simply do not get enough Vitamin B12 in their diet to meet the bodys demands, while others have difficulty absorbing it