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VitaminStrong Evidence

Vitamin B6

Pyridoxine

Critical for neurotransmitter synthesis, amino acid metabolism, and immune function. P5P (pyridoxal-5-phosphate) is the active form. Deficiency contributes to depression, PMS, and cognitive decline.

Known Health Benefits

Neurotransmitter synthesis (serotonin, dopamine, GABA)
Supports immune function
Reduces PMS symptoms at therapeutic doses
Homocysteine metabolism

Active Compounds

Pyridoxal 5'-phosphate (P5P), pyridoxine, pyridoxamine

Potential Side Effects

Peripheral neuropathy with prolonged use >200 mg/day; nausea at high doses

Known Drug Interactions

May interact with levodopa, phenytoin, and cycloserine

Evidence Classification

Strong Evidence

Supported by randomized controlled trials (RCTs), systematic reviews, or meta-analyses published in peer-reviewed journals.

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This entry is for educational purposes only. It is not medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement regimen, especially if you take medications or have health conditions.