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Vitamin B6: what the research says

124 studies on vitamin b6 in PMS and PMDD, each explained in plain English. 11 of them use the strongest designs: randomised trials and systematic reviews.

Randomised trial 40Study 25Survey study 23Review 16Systematic review 8Case-control study 6
Systematic review, 2025

Do nutritional interventions help with emotional symptoms of PMS?

Vitamin B6, calcium, and zinc consistently improved emotional PMS symptoms. Other nutrients like vitamin D, magnesium, and soy had insufficient evidence supporting their use.

Systematic review, 2013

Does Vitex (chaste tree) help PMS and PMDD symptoms?

Most studies found Vitex better than placebo for PMS. For PMDD, results were mixed: one study showed it equal to fluoxetine, while another found fluoxetine more effective. Side effects were mild.

Review, 2011

What are PMS and PMDD, and how common are they?

PMS affects 20-32% of women before menopause with moderate mood and physical symptoms. PMDD is more severe and affects 3-8% of women, causing significant problems at work or socially.

Systematic review, 2009

Which herbs, vitamins and minerals help treat PMS?

Only calcium has good evidence to work for PMS. Chasteberry and vitamin B6 may help, but most of the 62 products people try lack proper research.

Systematic review, 2007

What treatments work for premenstrual syndrome?

Many treatments have been studied for PMS, but researchers face a major challenge: there is no standard way to measure symptom severity, making it difficult to know which treatments truly work.

Randomised trial, 2003

What complementary and alternative medicines help with women's reproductive health issues?

Acupressure helps with pregnancy nausea and calcium helps with PMS. Vitamin B6, ginger, magnesium, chaste-tree berry, low-fat diet, exercise, and fish oil show promise but need more research.

Study, 2002

Which PMS treatments have good scientific evidence?

Calcium at 1200 mg daily and certain antidepressants have good evidence of working. Many popular treatments like vitamin B6, evening primrose oil, and birth control pills lack strong evidence. Some treatments like progesterone do not work.

Randomised trial, 2000

Which dietary supplements help PMS?

Only calcium has strong evidence from large rigorous trials. Magnesium, vitamin E, and carbohydrate supplements show limited promise but need more research. Vitamin B6 and evening primrose oil have mixed results.

Review, 1999

Does vitamin B6 supplement help treat PMS symptoms?

Yes, vitamin B6 is beneficial for treating premenstrual syndrome according to a systematic review of published studies. However, the abstract does not provide specific details about the magnitude of benefit.

Randomised trial, 1997

Does Vitex agnus castus work better than vitamin B6 for premenstrual tension syndrome?

Both reduced symptoms by similar amounts (47-48%), but more women on Vitex reported excellent results and had no remaining complaints, suggesting Vitex may work better for PMTS.

Randomised trial, 1985

Does vitamin B6 (pyridoxine) help premenstrual syndrome?

Vitamin B6 showed a small benefit overall after 3 cycles, though it did not clearly improve individual symptoms more than placebo.

Survey study, 2026

What are the causes, diagnosis, and treatments for PMS and PMDD?

This review consolidates what doctors know about PMS and PMDD. PMS affects 12-98% of reproductive-age women and PMDD affects 2-5%. Treatments range from lifestyle changes, therapy, and vitamins to medications like SSRIs and oral contraceptives.

Review, 2026

Can diet and nutrition help reduce PMS symptoms?

Yes. High intake of calcium, magnesium, vitamin D, and vitamin B6 reduce PMS symptoms. A high-fiber, low-sugar diet with omega-3 fatty acids also appears helpful.

Review, 2025

Do yoga and dietary changes help with PMS symptoms?

Yes, both yoga and specific dietary supplements improve PMS symptoms and quality of life. Combining yoga and diet changes together appears to work better than either alone.

Survey study, 2025

Do certain nutrients and body weight affect PMS?

Yes. Higher energy intake and fat intake were significantly related to PMS, as was abnormal body weight (both underweight and overweight). Other nutrients tested were not significantly related.

Randomised trial, 2025

Does vitamin B6 reduce PMS symptoms in teenagers?

Yes. Teenagers given vitamin B6 had significant reductions in PMS severity, particularly for mood-related symptoms like depression and anxiety.

Study, 2024

Does a combination of evening primrose oil, tocotrienol, and vitamin B6 reduce premenstrual symptoms?

Yes. In women with PMS taking this combination for 3 months, premenstrual symptoms improved significantly. The overall PMS score dropped by 61.03%, menstrual pain dropped by 75.20%, and breast tenderness dropped by 82.54%.

Study, 2024

How do lifestyle factors like diet, exercise, and stress affect menstrual health and PMS?

Lifestyle factors significantly affect menstrual health and PMS. A balanced diet with adequate vitamins, regular exercise, good stress management, and healthy weight can reduce PMS symptoms, while poor nutrition, high stress, extreme weight, and substance use make them worse.

Survey study, 2023

Can diet help reduce PMS symptoms?

A review of past studies found that calcium, vitamin B6, and chasteberry fruit likely help PMS symptoms, while saffron, ginger, and high vitamin D have weaker evidence.

Review, 2023

Can herbs and supplements help with PMS symptoms?

Herbs like chaste berry and supplements like calcium and magnesium may help with PMS. Evidence is strongest when combined with lifestyle changes and therapy, though more research is needed.

Case-control study, 2022

Are zinc and antioxidant levels different in women with PMS?

Yes. Women with PMS have lower zinc and antioxidant levels than women without PMS. Antioxidant levels appear linked to diet, particularly intake of antioxidant-rich foods.

Survey study, 2022

Do vitamins and minerals help reduce PMS symptoms?

Some vitamins and minerals appear to help reduce PMS symptoms, including vitamin E, B6, D and minerals like magnesium, zinc, and calcium. These findings come from reviewing studies published between 1980 and 2020.

Study, 2021

How do food choices and supplements affect PMS symptoms?

Certain vitamins and minerals appear to reduce PMS symptoms based on reviewed research. Vitamin B6, calcium, magnesium, and omega-3 were identified as potentially helpful.

Randomised trial, 2020

Do micronutrient supplements work better than vitamin B6 for PMS?

Both micronutrient supplements and vitamin B6 reduced PMS symptoms equally well. For very severe PMS (PMDD), micronutrients may work better than B6.

Randomised trial, 2020

Does whole body vibration work as well as resistive exercise for PMS symptoms?

Yes. Both whole body vibration and resistive exercise significantly reduced PMS symptoms, and they worked about equally well in this study.

Non-randomised trial, 2020

What treatments help premenstrual syndrome?

Both medications and non-drug treatments help PMS. Non-drug options including herbs, supplements, exercise, and therapy are recommended as they have fewer side effects.

Randomised trial, 2019

Do evening primrose oil or vitamin B6 ease PMS symptoms better than placebo?

Evening primrose oil significantly reduced PMS symptom severity, while vitamin B6 did not beat placebo in this trial.

Randomised trial, 2017

Do vitamin B6 and vitamin E help reduce PMS symptoms?

Yes. Both vitamin B6 and vitamin E significantly reduced PMS symptoms compared to placebo. The two vitamins were equally effective with no significant difference between them.

Survey study, 2017

Do auriculotherapy and vitamin B6 both reduce PMS symptoms?

Yes, both auriculotherapy and 40mg daily vitamin B6 reduced PMS symptoms significantly and equally. This is a small study with 42 women per treatment group.

Systematic review, 2017

Does the herb chaste-berry (Vitex agnus-castus) really reduce PMS symptoms?

A pooled analysis of 14 trials found a large average benefit of chaste-berry over placebo for PMS symptoms, but the underlying studies had a high risk of bias and very inconsistent results, so this cannot be taken as a firm conclusion.

Randomised trial, 2016

Does combining calcium and vitamin B6 reduce premenstrual syndrome symptoms?

Yes, combining calcium and vitamin B6 reduced PMS symptoms significantly more than vitamin B6 alone in university students.

Randomised trial, 2016

Does St. John's Wort or vitamin B6 treat premenstrual syndrome better than placebo?

Both St. John's Wort and vitamin B6 reduced PMS symptoms more effectively than placebo. St. John's Wort reduced symptoms by 40%, vitamin B6 by 38%, and placebo by 29%.

Cohort study, 2016

How often do doctors diagnose PMS and what treatments do they prescribe?

PMS diagnoses recorded in UK primary care fell dramatically from 8.43 per 1000 women in 1995 to 1.72 in 2013. Treatment shifted from progestogens and vitamin B6 to SSRIs and oral contraceptives.

Randomised trial, 2015

Do relaxation and vitamin B6 reduce emotional symptoms of PMS?

Both reduced emotional symptoms compared to control. Relaxation scored 0.3±0.7, vitamin B6 scored 1.2±0.2, and control scored 1.6±0.4, showing relaxation was more effective than vitamin B6.

Randomised trial, 2015

Does aerobic exercise reduce premenstrual syndrome symptoms in young women?

Yes. Three months of aerobic exercise combined with vitamin B6 and calcium supplements significantly reduced all PMS symptoms.

Study, 2015

Does vitamin B6 help reduce PMS symptoms in teenage girls?

Yes. Teenage girls who took vitamin B6 had a greater decrease in PMS symptoms compared to girls who received placebo.

Randomised trial, 2014

Which supplement works best for PMS - vitamin E, vitamin B6, calcium, or omega-3?

All four supplements and placebo reduced symptom severity over 3 months. The study does not specify which was most effective.

Randomised trial, 2012

Do magnesium or vitamin B6 reduce premenstrual syndrome severity?

Both magnesium and vitamin B6 significantly reduced PMS symptoms more than placebo, with B6 being most effective.

Case-control study, 2011

Does eating more B vitamins help prevent PMS?

Women eating more riboflavin and thiamine from food had lower PMS risk, but B vitamin pills did not help.

Randomised trial, 2010

Do magnesium and magnesium plus vitamin B6 reduce PMS severity?

Yes. Both magnesium and magnesium plus vitamin B6 reduced PMS symptoms. The combination of magnesium and B6 worked better than magnesium alone or placebo.

Randomised trial, 2010

Can femicomfort (vitamin B6, E, and evening primrose oil) relieve PMS symptoms?

Yes. Women taking femicomfort reported relief of PMS symptoms compared to placebo. The supplement was well-tolerated with no significant increase in side effects.

Randomised trial, 2007

Does vitamin B6 reduce premenstrual syndrome symptoms?

Yes, vitamin B6 reduced PMS severity more than placebo, particularly emotional symptoms. Both groups improved during the second cycle, but B6 showed more improvement.

Randomised trial, 2007

Does bromocriptine or pyridoxine help reduce PMS symptoms?

Both bromocriptine and pyridoxine significantly reduced PMS symptoms over 3 months. Pyridoxine showed a higher response rate with fewer side effects.

Randomised trial, 2006

Which dietary supplements and herbs work for PMS?

Calcium and vitamin B6 have the best evidence for PMS. Evening primrose oil and magnesium have conflicting results. Other supplements like Vitex need more and better research.

Randomised trial, 2006

Does aspirin or vitamins help with cyclic breast pain before your period?

No, neither aspirin nor a vitamin combination worked better than placebo. The placebo group actually improved the most.

Systematic review, 2003

Does vitamin B6 help with premenstrual syndrome?

Yes, a meta-analysis of 6 controlled trials found that vitamin B6 is effective for treating PMS.

Survey study, 2002

What treatments do doctors prescribe for PMS?

Hormone treatments were prescribed most often, used in over 40% of cases. Antidepressants rose from 2% to 16% of prescriptions, while vitamin B6 fell from 22% to 11%. Overall PMS diagnoses halved over five years.

Randomised trial, 2000

Does magnesium and vitamin B6 together help with anxiety-related premenstrual symptoms?

A combination of 200 mg magnesium plus 50 mg vitamin B6 daily showed a small benefit for anxiety-related symptoms like nervousness and mood swings. Individual supplements alone did not work.

Systematic review, 1999

Does vitamin B-6 help treat premenstrual symptoms?

Possibly yes. Nine trials show vitamin B-6 was 2.32 times more likely than placebo to improve overall symptoms and 1.69 times more likely to help depressive symptoms, but most trials were low quality.

Randomised trial, 1998

Which medication works best for severe PMS: fluoxetine, propranolol, alprazolam, or pyridoxine?

Fluoxetine at 10 mg reduced symptoms by 65.4%, the most of any drug tested. Propranolol reduced symptoms by 58.7%, alprazolam by 55.6%, and pyridoxine by 45.3%. Placebo also helped significantly, reducing symptoms by 39.4-46.1%.

Study, 1998

Does diet and supplements help PMS?

Yes, some dietary changes and supplements may help PMS. Magnesium and vitamin B6 are helpful for some women. Results usually appear after 3-4 months.

Review, 1994

What medications work for PMS and are they safe?

Three classes of drugs have proven effective: benzodiazepines (especially alprazolam), SSRIs (especially fluoxetine), and GnRH agonists. However, all have significant side effects that doctors must weigh against benefits.

Randomised trial, 1989

Does vitamin B6 reduce PMS mood symptoms?

Yes, vitamin B6 at 50 mg per day significantly improved mood-related symptoms like depression, irritability, and tiredness. It did not help other PMS symptoms. Only about half the women finished the study.

Case-control study, 1988

Do women with PMS have vitamin or mineral deficiencies?

No. The study found no difference in vitamin and mineral levels between women with PMS and healthy women, so deficiencies probably do not cause PMS.

Case-control study, 1987

Do women with PMS have different brain chemistry, and can vitamin B6 fix it?

Women with PMS have higher levels of a brain chemical linked to stress. Vitamin B6 did not reduce these levels.

Randomised trial, 1987

Does vitamin B6 help premenstrual tension symptoms?

No. Vitamin B6 did not significantly improve PMS symptoms in this small study, even though it increased a blood marker of serotonin activity.

Randomised trial, 1987

Does vitamin B6 help with PMS symptoms?

No, 100 mg per day of vitamin B6 did not improve PMS symptoms in this study of 34 women.

Randomised trial, 1987

Does vitamin B6 help premenstrual symptoms?

Vitamin B6 may help some premenstrual symptoms like dizziness and vomiting, but does not help physical symptoms or mood as much. However, there are concerns about taking these doses.

Study, 1986

Is low vitamin B6 a cause of PMS?

No. Vitamin B6 levels were similar in women with severe PMS and those without symptoms, suggesting B6 deficiency does not cause PMS.

Randomised trial, 1985

Does vitamin B-6 help premenstrual tension?

No. Vitamin B-6 at 100 mg daily was no better than placebo for relieving premenstrual tension.