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Neelakantan H, Vance V, Wetzel MD, et al
Mass Spectrom Rev
Vitamin B12 injections are used to treat B12 deficiency, low blood counts, anemia, and chronic fatigue
Optimal management of pernicious anemia
These deficiencies might be caused by many reasons, such as anorexia, lactation, stress, or overexertion
Increased energy is often the first noticeable change, followed by gradual improvements in body composition over subsequent weeks
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