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Repeat every 23 months in severely deficient areas, or every 56 months where deficiency is mild
2025 Aug 18;15(1):30275
This is the point where most clinicians evaluate whether to continue, switch approaches, or cycle off
As an essential nutrient, vitamin B12 plays a vital role in energy production, red blood cell formation, and the healthy functioning of your nervous system
However, some may experience mild gastrointestinal issues
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