StackTerminal.Health

BETA

Vitamin B6 (Pyridoxine)

Essential coenzyme involved in neurotransmitter synthesis, amino acid metabolism, & immune function.

dailybrainhormoneswomens health

Evidence last reviewed: 04 Apr 2026

Evidence
1 record
1 recordBest grade:Moderate
Biomarkers
Mood / Wellbeing

Research shows moderate evidence for Vitamin B6's effectiveness in improving PMS mood symptoms and providing a modest antidepressant effect when combined with magnesium. However, more studies are needed to fully understand its benefits and optimal dosing.

PMS symptoms / mood
Women with PMS; adults with depression · RCTs
Moderate

Consistent improvement in PMS mood symptoms; modest antidepressant signal when combined with magnesium.

Dose: 50 mgDuration: 2–3 menstrual cycles
High doses (>200 mg/day long-term) can cause peripheral neuropathy.
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Forms & usage
How to take it

Take 1.3 to 2.0 mg daily, preferably in the P5P form, with food.

Pyridoxine HCl
Standard form.
Pyridoxal-5-phosphate (P5P)
Active coenzyme form.
Safety & trade-offs2
Neural

Peripheral neuropathy (tingling/numbness in hands and feet) with sustained high doses

Context: doses >100mg/day for months

Tolerance

Pyridoxine HCl form associated with higher neuropathy risk — P5P (active) form better tolerated at therapeutic doses

High  Moderate   Low / note

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