why would i need a b12 injection Are Shots Safe? Royal Palm Beach Medical Group B12 Vitamin shot - GlamourEyes

Vitamin B12 is a water-soluble vitamin that plays a vital role in brain function and the production of DNA and red blood cells

The Mayo Clinic indicates high doses of vitamin B-12, such as those used to treat a deficiency, might cause: Headache Nausea and vomiting Diarrhea Fatigue or weakness Tingling sensation in hands and feet Healthline says: In very rare cases, some people can experience side effects caused by allergic reactions or sensitivity In addition to helping athletes build muscle, vitamin B12 plays a role in maintaining nervous system function and brain health

abnormalities should be investigated

Typically, anywhere from a few days to a few weeks