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Vitamin · in-depth review

Vitamin B6 (Pyridoxine)

Vitamin B6 (Pyridoxine)

Pyridoxine and related forms convert in the body to pyridoxal phosphate, which catalyzes amino-acid transamination, neurotransmitter synthesis, and heme formation. Poultry, fish, and whole grains are the main food sources.

Also known asPyridoxineP5P

Marked asPrimarySupporting

Primary

Maintains nerve transmission

Pyridoxal phosphate is the coenzyme of transaminases and decarboxylases, so tryptophan can become serotonin and glutamate can become GABA. Chicken breast, salmon, potatoes, and bananas all contain a fair amount. In people with premenstrual mood swings, light sleep, and a protein-sparse diet, this amino-acid metabolic path is more often used to check whether the diet is in place.

Primary

Promotes blood formation

The first step of heme synthesis needs pyridoxal phosphate for δ-aminolevulinic acid formation before red cells can carry oxygen. B6 also helps homocysteine through trans-sulfuration. Among people who eat only refined starch for a long time, with little meat and few potatoes, fatigue and stomatitis can appear together with this hematopoietic coenzyme path.

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Eases premenstrual mood swings

Pyridoxine is a cofactor for serotonin, dopamine, and GABA synthesis; these neurotransmitters shape mood and sleep rhythm. Premenstrual breast pain and mood trials mostly watch scale changes after several continuous weeks; beans, bananas, and poultry are food sources, and people who feel irritable before their cycle often match gaps on this amino-acid metabolism path.

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PMS symptoms

Pyridoxal phosphate is the coenzyme of transaminases and decarboxylases, so tryptophan can become serotonin and glutamate can become GABA. People with breast fullness and a shorter temper before menses more often notice swelling-pain and mood swings after several continuous weeks.

Nausea

Pyridoxal phosphate is the coenzyme of transaminases and decarboxylases, so tryptophan can become serotonin and glutamate can become GABA. People who feel the stomach turn at cooking smells or in the morning more often notice fewer nauseous spells and better meal tolerance after several continuous weeks.

Low mood

Pyridoxal phosphate is the coenzyme of transaminases and decarboxylases, so tryptophan can become serotonin and glutamate can become GABA. People who cannot get going and feel less interest in usual likes more often notice mood-scale scores and daytime interest after several continuous weeks.

Premenstrual syndrome

Pyridoxal phosphate is the coenzyme of transaminases and decarboxylases, so tryptophan can become serotonin and glutamate can become GABA. People whose premenstrual mood and swelling already affect work more often notice symptom intensity and number of days after several continuous weeks.

Peripheral neuropathy

Pyridoxal phosphate is the coenzyme of transaminases and decarboxylases, so tryptophan can become serotonin and glutamate can become GABA. People with tingling or numbness in fingertips and soles more often notice the area of the feeling and night-time intrusion after several continuous weeks.

With foodMay be taken with breakfast or lunch; if your stomach is sensitive, switch to after a meal. Fat-soluble vitamins are better with fat-containing food; water-soluble vitamins can usually be taken on an empty stomach or with food
Best timeMorning or midday
SolubilityWater-soluble

If numbness or tingling persists, stop raising the dose on your own and see a doctor.

General wellnessAdults 1.3 mg/day (ages 19–50); men 51 and older 1.7 mg/day, women 1.5 mg/day
Specific needsTreatment doses for deficiency must be set by a doctor. The adult supplement upper limit is about 100 mg/day; do not exceed it on your own for long periods.

How oftenCan be used daily, but count the total from all multivitamins.

Cautions

Long-term high doses can cause peripheral neuropathy; do not exceed product or clinician guidance.

Interactions

  1. Levodopa without a decarboxylase inhibitor may be antagonized by pyridoxine
  2. Antiepileptic drugs (may change vitamin B6 status)
Common side effects

· Nausea or stomach upset (high doses)

Rare but important

· Numbness or tingling in the hands or feet, or unsteady walking, may signal neurotoxicity.

Long-term dependenceNot addictive; long-term excess can cause irreversible nerve damage.

Sources

These are institution pages you can check—not a certification of this ingredient.

Medical disclaimerThis page is compiled by the HerbBB editorial team for general health information only. It is not a substitute for advice from a doctor, pharmacist, or other qualified clinician. If you have a health condition, take medicines, or are pregnant or breastfeeding, speak with a professional first.