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The n=8 endocrine study was also too small and short-term to establish safety [14]
Vitamin B12 is an essential water-soluble vitamin that plays a role in many bodily functions, including: DNA production red blood cells nerve cells Without vitamin B12, a person may feel tired and weak due to megaloblastic anemia
Common side effects include injection-site irritation, mild nausea, and transient fatigue
Ensuring adequate B12 removes one potential contributor to mood problems during this challenging period
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