severe pain after b12 injection Why do I feel worse a injection? Vitamin B12 Injections: Hot Shots?

If you're 50 or over, your doctor may recommend a B12 shot after a significant blood test

For general prevention in individuals at risk of deficiencysuch as vegans and vegetarianstypical UK recommendations include cyanocobalamin supplements providing 10-100 micrograms daily or approximately 2000 micrograms weekly

Vitamin B12 is essential for energy production and maintaining healthy nerve cells and red blood cells

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Safety, Limits, and Caveats The physiological review focuses on normal intrinsic factor function and may not fully address all pathological conditions affecting its production or function

In milder or borderline cases, high-dose oral vitamin B12 may be sufficient, depending on absorption and clinical context