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A Mayo Clinic review concluded that there is no solid evidence that vitamin B 12 injections provide an energy boost or aid weight loss
It is important in the normal functioning of the nervous system via its role in the synthesis of myelin, and in the circulatory system in the maturation of red blood cells in the bone marrow
B12 supplementation is given to people with demonstrated or likely B12 deficiency
Women who are pregnant, planning pregnancy, or breastfeeding should avoid the compound entirely due to unknown effects on fetal and infant development
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