Vitamin B6 (P-5-P): Benefits for Hormones, PMS & Mood

[ 01 ] Key Facts

Dose in element³	RISE (AM Formula): 1.5mg
Form	Pyridoxine P-5-P (pyridoxal 5’-phosphate) — the bioactive coenzyme form
Signs you may need more	Worsening PMS, mood swings, brain fog, tingling or numbness in hands and feet
Safe range	1.3–1.7mg daily RDI for adult women; upper intake level 25mg/day from supplements. Chronic high-dose use (>100mg/day) is associated with peripheral neuropathy.

Food sources

Chicken Breast
Bananas
Chickpeas
Potatoes

[ 02 ] Rationale

Why this ingredient is in element³

Vitamin B6 sits at the intersection of two systems that define daily wellbeing for women: hormonal balance and neurotransmitter production. As a coenzyme for over 140 enzymatic reactions, B6 is involved in more biochemical processes than any other B vitamin. But its most consequential roles centre on the synthesis of serotonin, dopamine, GABA, and norepinephrine — the neurotransmitters that regulate mood, motivation, anxiety, and sleep.

The conversion of tryptophan to serotonin and tyrosine to dopamine both require pyridoxal 5’-phosphate (P-5-P) as a coenzyme. When B6 is insufficient, these conversions slow, and the subjective experience is familiar: low mood, irritability, difficulty concentrating, and disrupted sleep. P-5-P is the bioactive form of B6 that the body uses directly, bypassing the liver conversion step that standard pyridoxine requires. This is particularly relevant for women with compromised liver function or those taking hormonal contraceptives, which are known to deplete B6.

B6’s hormonal role is equally significant. It supports the metabolism of oestrogen through the liver’s phase I and phase II detoxification pathways, helping to clear excess oestrogen and maintain the oestrogen-progesterone balance. It also supports progesterone production indirectly by influencing the hypothalamic-pituitary-ovarian axis. This dual hormonal action is why B6 is consistently associated with PMS symptom relief in clinical research.

Within the RISE formula, B6 works synergistically with Methylfolate (B9) and Methylcobalamin (B12) to support the methylation cycle — the biochemical process that regulates gene expression, neurotransmitter metabolism, and homocysteine clearance. B6 is required for the conversion of homocysteine to cysteine via the transsulfuration pathway, complementing the B9/B12-dependent remethylation pathway. Together, these three B vitamins ensure homocysteine is managed through both routes.

At 1.5mg, RISE provides slightly above the RDI to account for the increased demand that hormonal fluctuations, stress, and age place on B6-dependent pathways — meaningful support within well-established safety margins.

[ 03 ] At 35+

Relevant at 35+

The hormonal shifts of perimenopause place B6 under unprecedented demand. As oestrogen levels fluctuate and eventually decline, the liver’s oestrogen metabolism pathways work harder to maintain balance, consuming more P-5-P in the process. Simultaneously, progesterone production becomes more erratic, and the B6-dependent pathways that support progesterone balance are stretched thin. The result is an intensification of PMS-like symptoms — mood swings, irritability, breast tenderness, bloating — that many women experience for the first time in their late 30s.

Cortisol dysregulation from HPA axis stress compounds the problem. Chronic cortisol elevation increases the body’s consumption of B6 for neurotransmitter synthesis, as the nervous system attempts to maintain serotonin and GABA production under stress. This creates a depletion cycle: stress increases B6 demand, B6 depletion impairs mood regulation, impaired mood regulation amplifies the stress response, and the cycle continues.

The methylation connection becomes more critical after 35 as well. Homocysteine levels tend to rise with age, particularly when methylation support (B6, B9, B12) is insufficient. Elevated homocysteine is associated with cardiovascular risk, cognitive decline, and mood disorders — outcomes that become increasingly relevant during the hormonal transitions of midlife. B6’s role in the transsulfuration pathway makes it an essential partner to the methylation support provided by Methylfolate and Methylcobalamin in RISE.

[ 04 ] Your Questions

Your Questions

What is vitamin B6?

Vitamin B6 is a water-soluble B vitamin that exists in several forms, of which pyridoxal 5’-phosphate (P-5-P) is the biologically active coenzyme. It is essential for over 100 enzymatic reactions in the body, with its most critical roles in amino acid metabolism, neurotransmitter synthesis, and sex hormone regulation. Vitamin B6 is required to synthesise serotonin, dopamine, GABA, and noradrenaline — the key neurotransmitters governing mood, motivation, and stress response — making it one of the most directly mood-relevant nutrients in the RISE formula.

What are the benefits of taking vitamin B6?

Vitamin B6 supplementation supports mood regulation, hormonal balance, and energy metabolism. It is one of the best-researched nutrients for premenstrual syndrome, with multiple randomised controlled trials demonstrating significant reductions in PMS symptoms — including irritability, depression, breast tenderness, and fatigue — at supplemental doses. It also supports healthy oestrogen metabolism by enabling the liver to process and clear excess oestrogen, reduces elevated homocysteine (a cardiovascular risk marker), and is essential for the conversion of tryptophan to serotonin.

What are the benefits of vitamin B6 in the element³ protocol?

In element³ RISE, vitamin B6 at 1.5mg as P-5-P forms a key part of the hormonal balance and mood support stack. As the active coenzyme form, P-5-P is immediately usable by the body without the liver conversion required for standard pyridoxine — this is particularly important for women with MTHFR variants or compromised liver function. Within RISE, B6 works synergistically with B9 (methylfolate) and B12 (methylcobalamin) in the methylation cycle — the three B vitamins that collectively support mood, neurotransmitter synthesis, and healthy homocysteine levels.

What is the recommended daily intake of vitamin B6?

The recommended dietary intake for adult women aged 19–50 is 1.3mg per day, rising to 1.7mg after age 50. element³ RISE provides 1.5mg per serve as the active P-5-P form — within the RDI range. The upper intake level for supplemental vitamin B6 is 25mg per day; chronic intake above 100mg per day is associated with peripheral neuropathy. The 1.5mg in RISE is well below any safety concern and is chosen to provide meaningful support at an everyday dose rather than a therapeutic excess.

What food provides vitamin B6?

Vitamin B6 is found in chicken breast, turkey, tuna, salmon, potatoes (with skin), bananas, chickpeas, sunflower seeds, and pistachio nuts. Unlike some B vitamins, dietary B6 is reasonably accessible in a mixed diet. However, cooking destroys approximately 20–50% of the vitamin B6 in foods, and bioavailability from plant sources is lower than from animal sources. Women following plant-based diets or eating predominantly cooked foods may have lower effective B6 intake than food tables suggest.

Are there any vitamin B6 side effects?

At the 1.5mg dose in element³ RISE, vitamin B6 is safe and well-tolerated. The peripheral neuropathy associated with excessive B6 intake only occurs with chronic supplementation above 100mg per day — far above the dose in RISE. The P-5-P form used in RISE is the active coenzyme and is considered slightly less likely to accumulate than standard pyridoxine, making it the safer choice at higher supplemental doses. No adverse effects are known at or below the 25mg upper intake level.

What are vitamin B6 deficiency symptoms?

Vitamin B6 deficiency symptoms include worsening PMS (particularly mood-related symptoms), unexplained mood dips or irritability, brain fog, tingling or numbness in hands and feet (peripheral neuropathy in moderate deficiency), cracked lips or corners of mouth, and increased susceptibility to infections. Because B6 is required for serotonin and dopamine synthesis, low B6 status can directly impair mood regulation — a connection often missed when mood changes are attributed solely to hormonal fluctuations or stress.

What form of vitamin B6 is in the element³ blend?

element³ RISE uses pyridoxal 5’-phosphate (P-5-P) — the active coenzyme form of vitamin B6. Standard vitamin supplements commonly use pyridoxine hydrochloride, which requires conversion in the liver to P-5-P before it can be used. P-5-P bypasses this conversion step, making it directly bioavailable. This is particularly relevant for women with MTHFR gene variants or any liver stress that may impair conversion efficiency. P-5-P is the form found in the body’s own tissues and is the reference compound in clinical research on B6’s neurological and hormonal effects.

[ 05 ] The Research

2 studies

The Research

Study	Key finding	Why it's here	Read
Evaluating the effect of magnesium and magnesium plus vitamin B6 supplement on the severity of premenstrual syndromeFathizadeh, N., Ebrahimi, E., Valiani, M., Tavakoli, N., & Yar, M. H. (2010). Evaluating the effect of magnesium and magnesium plus vitamin B6 supplement on the severity of premenstrual syndrome. Iranian Journal of Nursing and Midwifery Research, 15(Suppl 1), 401–405.	Combined magnesium + vitamin B6 reduced overall PMS severity more than magnesium alone in a placebo-controlled trial.	Supports hormone metabolism and balanced mood through the cycle.	Read →
Efficacy of vitamin B-6 in the treatment of premenstrual syndrome: systematic reviewWyatt, K. M., Dimmock, P. W., Jones, P. W., & O'Brien, P. M. (1999). Efficacy of vitamin B-6 in the treatment of premenstrual syndrome: systematic review. BMJ, 318(7195), 1375–1381. https://doi.org/10.1136/bmj.318.7195.1375	Systematic review of randomised trials reported that vitamin B6 was associated with a meaningful improvement in overall PMS and depressive symptoms relative to placebo.	Supports neurotransmitter synthesis and mood regulation.	Read →

[ 06 ] In the Protocol

Where Vitamin B6 (as Pyridoxal-5-Phosphate) sits in the element³ Protocol

In RISE (AM Formula), Vitamin B6 at 1.5mg as bioactive P-5-P directly supports serotonin, dopamine, and GABA synthesis for mood stability and cognitive clarity, while simultaneously supporting oestrogen metabolism and progesterone balance for hormonal health. It works in a critical triad with Methylfolate (B9) and Methylcobalamin (B12) to regulate the methylation cycle and manage homocysteine, and it depends on Riboflavin (B2) for its own activation. Taken in the morning, B6 ensures the neurotransmitter and hormonal pathways that determine how you feel, think, and cope are supported from the start of the day.

You can learn more about the full element³ ingredient philosophy at element3.co.nz.

Vitamin B6 (as Pyridoxal-5-Phosphate)