WikiRemedy
Fatigue

Vitamin B12 / B Complex

Natural
🔬Research

Moderate

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👥Community

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WikiRemedy surfaces community experience, not medical advice. Always consult a qualified health professional.

Time to effect

2–6 weeks

Effort level

low

Category

Natural

Typical approach

Supplement / herb

How it works

B12 is required for myelin synthesis and red blood cell production. B vitamins are cofactors in the citric acid cycle. Deficiency directly impairs ATP production and oxygen-carrying capacity.

Test B12 levels before high-dose supplementation. Methylcobalamin or hydroxocobalamin forms are better absorbed. Serum B12 can appear normal even with functional deficiency — methylmalonic acid is a better marker.

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WikiRemedy surfaces community experience, not medical advice. Always consult a qualified health professional.