Vitamin B6 (pyridoxine) for fertility

On this page

1. What is vitamin B6?
2. Function and how it works
3. Fertility benefits
4. Recommended daily dose
5. Food sources
6. Cautions and contraindications
7. My Fertility Guide
8. Related pages

1. What is vitamin B6?

Vitamin B6 (pyridoxine) is a water-soluble B vitamin essential for the activity of over 60 enzymes. It is one of the most clinically useful vitamins for fertility because of its role in the production of progesterone, the relief of premenstrual syndrome (PMS), and the metabolism of amino acids.

Reference ranges and recommended intakes vary from country to country — always interpret guidance against the recommendations of your own healthcare authority.

2. Function and how it works

Vitamin B6 supports fertility through multiple mechanisms:

1. Progesterone production. B6 is required for the corpus luteum to produce adequate progesterone in the luteal phase, supporting implantation and early pregnancy.
2. Reduces PMS. Research has shown that B6 reduces PMS symptoms, including breast tenderness, mood swings and bloating.
3. Reduces high prolactin. B6 helps regulate prolactin levels, which when elevated can suppress ovulation.
4. Neurotransmitter synthesis. B6 is essential for the production of serotonin, dopamine and GABA — helping to regulate mood, sleep and stress.
5. Homocysteine metabolism. Together with folic acid and B12, B6 helps regulate homocysteine, elevated levels of which are associated with miscarriage.

3. Fertility benefits

Vitamin B6 is one of the most important B vitamins for women trying to conceive, particularly those with luteal phase defect, mildly elevated prolactin, or significant PMS. It is best taken alongside other B vitamins and magnesium for optimal effect.

4. Recommended daily dose

I recommend a daily dose of 2 mg of vitamin B6, typically obtained as part of a good-quality prenatal or B-complex supplement. Higher doses (10–50 mg) are sometimes used short-term for severe PMS or luteal phase defect under professional supervision. Doses above 200 mg per day long-term can cause peripheral nerve damage and should be avoided.

5. Food sources

Vitamin B6 is found in:

1. Whole grains
2. Meat and poultry
3. Oily fish (salmon, tuna)
4. Bananas
5. Nuts (especially walnuts and pistachios)
6. Green leafy vegetables
7. Avocados
8. Egg yolks

6. Cautions and contraindications

1. Doses above 200 mg per day taken long-term can cause peripheral neuropathy (nerve damage in the hands and feet) — high-dose B6 should be supervised.
2. The active form of B6 (pyridoxal-5-phosphate, P5P) is preferable for women with poor B6 conversion.
3. Always consult with a fertility specialist or your doctor before starting any new supplement regime.

7. My Fertility Guide

8. Related pages

• Fertility supplements directory
• Vitamin B2 (riboflavin)
• Vitamin B12 (cobalamin)
• Folic acid (vitamin B9)
• Magnesium
• Agnus castus
• Progesterone
• Prolactin
• Luteal phase defect