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Final Thoughts Vitamin B12 injections are an effective and fast-acting way to replenish your B12 levels, especially for individuals with absorption issues, dietary restrictions, or symptoms of deficiency
However, some people are more at risk of a vitamin B-12 deficiency, including older people, vegetarians and vegans, those with intestinal disorders, and individuals with diabetes, muscular degeneration, or Lou Gehrigs disease
Common sites for this method include the abdomen (at least two inches away from your belly button) or the fatty part of the thigh
Serious Adverse Reactions and When to Seek Medical Advice Whilst serious adverse reactions to vitamin B12 supplementation are exceptionally rare, elderly patients and their carers should be aware of warning signs that require immediate medical attention