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Vitamin B12 is necessary for the production of red blood cells, which help carry oxygen throughout the body
Its constituents include fragments of brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), glial cell line-derived neurotrophic factor (GDNF), and ciliary neurotrophic factor (CNTF)
In people whose B12 is already in the normal range, the data is more modest
Safety and effectiveness in pediatric patients has not been established
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