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Contraindications and Precautions Some people should be careful or not get vitamin B12 injections at all
People experiencing fatigue: B12 plays a role in energy production, and supplementation may help alleviate fatigue
Red Blood Cell Formation: Inadequate B12 levels can lead to anemia, resulting in reduced oxygen delivery to your body's tissues, causing weakness and paleness
British Journal of Haematology,2014,166,496-513
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