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Vitamin B12 is an essential water-soluble vitamin that plays a role in many bodily functions, DNA production red blood cells nerve cells Without vitamin B12, a person may feel tired and weak due to megaloblastic anemia
PubMed Central, Konijeti, Gauree G., et al
An 8-week cycle typically pairs with a 4-week break
Increasing your intake of vitamin B12 through foods or supplements can help prevent deficiency, which may improve side effects like low energy levels and fatigue
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Shots can go into muscles or veins
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