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If you have a genuine B12 deficiency and symptoms are linked to it, some people notice improvement in energy over days to a couple of weeks

Pregnancy Support For expectant mothers (with healthcare provider approval), B12 provides important support: Essential for fetal brain and nervous system development Helps prevent neural tube defects Supports maternal energy during pregnancy Contributes to healthy red blood cell production Note: Always consult with your prenatal care provider before starting any supplement

Others may have temporary symptoms such as mild nausea, headache, or mild dizziness

You should be able to see through it