Moderate evidencevitamin

Vitamin B12 for Brain Fog

B12 is essential for myelin sheath maintenance and synthesis of S-adenosylmethionine (SAMe), a key methyl donor for neurotransmitter production. Deficiency causes demyelination and impaired neural signaling manifesting as brain fog.

How strong is the research?

Moderate evidence

Based on a clinical trial with human participants.

Research source

SourceTangney CC et al. · Neurology 2011

How much to take

1000–2000 mcg

Sublingual or liquid forms bypass GI absorption issues. Essential to test B12 levels before supplementing. Methylcobalamin is preferred over cyanocobalamin.

When to take it

Best taken: morning

All uses of Vitamin B12All supplements for Brain Fog

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