Vitamin B6

WHAT VITAMIN B6 DOES

This is a hard list to narrow down, as hinted above. We've tried to choose the effects that have the most synergies and coincidentally mutual effects with other ingredients in the range of Junai products.

Energy and macronutrient metabolism

B6 is involved in the metabolism of all 3 macronutrients: proteins, fats, and carbohydrates. For anyone whose energy feels inconsistent relative to their diet and sleep, or who hits walls during sustained effort that shouldn't be hitting them yet, B6 levels could be a great thing to look at. Supplementation won't turn a bad diet into a good one, but at adequate levels it ensures at least that food is converted smoothly into usable cellular energy.

Neurotransmitter production and mood

Serotonin, dopamine, GABA, and norepinephrine are all synthesized from amino acid precursors via PLP-dependent enzymatic reactions. B6 doesn't produce these neurotransmitters on its own, but without adequate B6, the enzymes that make them work less efficiently. The felt consequence of suboptimal B6 status in this domain tends to be mood that's flat rather than dramatically depressed, motivation that's dull rather than absent, and sleep quality that's slightly but persistently off. For people who have addressed sleep hygiene, diet, and stress without fully resolving these symptoms, B6 status is worth examining before reaching for more complex interventions.

Hormonal balance and menstrual health

B6 is directly involved in estrogen and progesterone metabolism in the liver, specifically in the conjugation reactions that prepare these hormones for excretion. When B6 status is insufficient, estrogen clearance is impaired and circulating estrogen can remain elevated relative to progesterone. This imbalance is implicated in the symptom cluster associated with premenstrual syndrome (PMS): mood changes, bloating, breast tenderness, and irritability in the luteal phase. The clinical research on B6 and PMS is among the more substantive bodies of evidence for any micronutrient in this area, and it's the most honest anchor for Junai HER's B6 inclusion.

Hormone metabolism in men

B6 participates in testosterone metabolism through its role in the liver's steroid hormone processing pathways, specifically in the conjugation and clearance of androgens. Adequate B6 status supports the normal hormonal environment in men, and it's part of why B6 sits alongside zinc, L-arginine, and red maca in Junai HIM. Not as the headliner, but as the infrastructure that makes the headliners' environment more functional.

Creatine synthesis support

B6 doesn't synthesize creatine directly, but it supports the metabolic infrastructure that makes creatine synthesis possible. Two of the three amino acids required for creatine production, glycine and methionine, are processed and interconverted via PLP-dependent transaminase reactions. Adequate B6 status keeps these amino acid metabolism pathways running efficiently, supporting the body's own creatine production alongside the more direct contribution of L-arginine. For anyone already supplementing Creatine HCl Body Redefined, the synthesis pathway is bypassed entirely, but understanding B6's supporting role in it clarifies why the 3 sit together in the broader Junai ecosystem.

Red blood cell formation

B6 is required for the synthesis of heme, the iron-containing structure at the center of hemoglobin and myoglobin. Without adequate B6, heme synthesis is impaired and red blood cells become microcytic (small) and hypochromic (pale and oxygen-carrying-deficient), producing a form of anemia that looks similar to iron deficiency anemia on a blood film but doesn't respond to iron supplementation. For athletes and anyone with high oxygen demand, B6-dependent red blood cell function is a real contributor to sustained aerobic capacity.

Immune function

B6 supports the proliferation and maturation of lymphocytes and the production of antibodies. B6 deficiency consistently impairs both cellular and humoral immune responses in animal models, and observational studies in humans link low B6 status to reduced immune competence, particularly in older adults. The mechanism runs through B6's role in nucleic acid and protein synthesis in rapidly dividing immune cells.

Cognitive function and neurological health

Beyond neurotransmitter synthesis, B6 is involved in the metabolism of homocysteine (an amino acid that, when elevated, is associated with cognitive decline and cardiovascular risk). PLP-dependent enzymes convert homocysteine to cysteine via the transsulfuration pathway, keeping circulating homocysteine levels in check. This is a role B6 shares with folate and B12 in the homocysteine metabolism triad. Elevated homocysteine in the context of low B6 status is a well-established risk factor for cognitive impairment in aging, making B6 one of the more evidence-grounded micronutrients in discussions about brain health.

HOW VITAMIN B6 WORKS

Pyridoxal-5-phosphate (PLP) is the biologically active form of B6 and the coenzyme at the center of every reaction described in this section. Pyridoxine hydrochloride, the supplemental form, is converted to PLP in the liver through a 2-step phosphorylation and oxidation process before it can do anything useful. What follows is a description of what PLP does once it gets there. The common thread across all of it is the same: PLP binds to enzyme active sites and enables reactions that would otherwise not proceed, or would proceed too slowly to meet the body's demand. It's not a dramatic molecule, but it is an indispensable one.

How B6 contributes to energy and macronutrient metabolism

In macronutrient metabolism, PLP's primary role is in transamination: the transfer of amino groups between amino acids and keto acids, which is how the body interconverts amino acids, synthesizes non-essential amino acids from available precursors, and routes amino acid carbon skeletons into the citric acid cycle for energy production. Every time the body uses protein as fuel or repurposes amino acids for biosynthesis, PLP is in the room.

PLP is also a coenzyme for glycogen phosphorylase, the enzyme responsible for cleaving glucose-1-phosphate from glycogen chains in muscle and liver tissue during periods of energy demand. This makes B6 directly relevant to how quickly and efficiently stored carbohydrate energy is mobilized during exercise. The person who experiences unusual energy drop-offs during sustained effort despite adequate glycogen loading may be experiencing, in part, a B6-limited glycogen mobilization step.

How B6 participates in neurotransmitter production and affects mood

PLP is a required coenzyme for the aromatic amino acid decarboxylases that convert amino acid precursors into active neurotransmitters. Specifically: tryptophan decarboxylation to serotonin (via 5-hydroxytryptophan), DOPA decarboxylation to dopamine, glutamate decarboxylation to GABA (gamma-aminobutyric acid, the brain's primary inhibitory neurotransmitter), and tyrosine hydroxylation to norepinephrine. These are not minor contributions to neurotransmitter availability. They are rate-limiting steps.

When PLP availability is low, decarboxylase activity declines, and neurotransmitter synthesis slows across all 4 of these pathways simultaneously. The result is not a dramatic collapse in mood but a broadly reduced ceiling on the neurotransmitter availability that underlies motivation, emotional regulation, sleep quality, and anxiety management. It's a blunting rather than a breaking, which is exactly why it tends to be attributed to anything else but B6 status.

How B6 contributes to hormonal balance and menstrual health

The liver metabolizes steroid hormones, including estrogen and progesterone, through a series of conjugation reactions that prepare them for biliary or urinary excretion. Several of these reactions are PLP-dependent, and adequate B6 status is required for efficient estrogen clearance specifically. When B6 is insufficient, the liver's capacity to conjugate and excrete estrogen is reduced, and circulating estrogen can remain elevated relative to progesterone in the luteal phase of the menstrual cycle.

The resulting estrogen-progesterone imbalance is the proposed mechanism behind B6's documented effects on PMS symptoms. Multiple randomized controlled trials have shown that B6 supplementation at doses of 50 to 100 mg/day reduces the severity of PMS-related mood symptoms, bloating, and irritability, with effect sizes that are modest but consistent across studies. The mechanism is credible and the clinical data are among the cleaner bodies of evidence for micronutrient intervention in menstrual health.

B6 also interacts with the production of pyridoxal phosphate-dependent transaminases that process progesterone metabolites, supporting the overall hormonal clearance picture beyond estrogen alone.

How B6 assists hormone metabolism in men

In male liver tissue, PLP-dependent transaminases participate in androgen metabolism, the processing and conjugation of testosterone and its metabolites for excretion. Adequate B6 status supports this clearance pathway, contributing to a hormonal environment where androgens are produced, circulate at physiologically appropriate levels, and are cleared efficiently. The interaction is indirect relative to zinc's more proximal role in testosterone biosynthesis, but it's part of the same hepatic hormone metabolism infrastructure.

B6 also supports the conversion of tryptophan to serotonin and the modulation of cortisol activity at the level of glucocorticoid receptor binding, which is relevant to the stress-hormonal balance that affects testosterone in chronically stressed men.

How B6 supports creatine synthesis

Creatine is synthesized from 3 amino acids: arginine, glycine, and methionine. B6's role is in the preparation and availability of glycine and methionine for this pathway. PLP-dependent transaminases interconvert amino acids throughout the body's nitrogen economy, and glycine in particular is produced and maintained in adequate pools partly through PLP-dependent reactions. Methionine metabolism also intersects with the transsulfuration pathway where PLP operates. B6 is not the rate-limiting factor in creatine synthesis under normal conditions, and this is not a headline mechanism. It is, however, a real part of the metabolic context in which L-arginine's amidino group donation to glycine, the committed first step in creatine synthesis, takes place. B6 and arginine were deliberately included together in Junai HIM as a result of this.

How B6 contributes to red blood cell formation

PLP is a cofactor for aminolevulinic acid synthase (ALAS), the enzyme that catalyzes the first and rate-limiting step in heme biosynthesis: the condensation of glycine and succinyl-CoA to form delta-aminolevulinic acid (ALA). Every subsequent step in heme synthesis flows from this first one. Without adequate PLP, ALAS activity is reduced, heme production slows, and hemoglobin synthesis is impaired even when iron stores are sufficient. The resulting pyridoxine-responsive anemia is microcytic and hypochromic, clinically similar to iron deficiency, but doesn't respond to iron loading. The diagnostic clue is that it does resolve with B6 supplementation.

For athletes whose performance depends on oxygen delivery, B6-dependent heme synthesis is a foundational variable. It's not glamorous, but it's the reason adequate B6 intake sits upstream of red blood cell function.

How B6 is involved in immune function

B6's role in immune function runs through its central involvement in nucleic acid and protein synthesis in rapidly dividing cells. Immune activation requires lymphocytes to proliferate quickly. Lymphocyte proliferation requires DNA replication and protein synthesis at a high rate. PLP-dependent enzymes are involved at multiple steps: in purine synthesis (required for DNA and RNA), in the transamination reactions that supply amino acids for protein synthesis, and in the production of cytokines and antibodies that mediate the immune response.

B6 deficiency in animal models consistently produces thymic atrophy, reduced lymphocyte proliferation, impaired antibody production, and reduced natural killer cell activity. In humans, the effects are most pronounced in older adults, in whom B6 status tends to be lower and immune competence is already declining. The interaction is real, well-characterized, and relevant to anyone whose immune response feels sluggish or incomplete.

How B6 contributes to cognitive function and neurological health

Beyond neurotransmitter synthesis, PLP is the coenzyme for cystathionine beta-synthase and cystathionine gamma-lyase, the two enzymes of the transsulfuration pathway that convert homocysteine to cysteine. Homocysteine is a metabolic intermediate in methionine metabolism that, when it accumulates, damages vascular endothelium, promotes oxidative stress, and is associated with accelerated cognitive decline and increased cardiovascular risk.

B6, alongside folate and B12, is one of the 3 micronutrients most directly involved in keeping homocysteine levels in check. Of the 3, B6 handles the transsulfuration arm of homocysteine clearance, while folate and B12 handle the remethylation arm. The system requires all 3 to function optimally. Junai HER and Junai HIM both currently provide twice the recommended daily dose of B6. Moringa's natural folate content contributes to the remethylation side, though not as a targeted therapeutic dose.

Elevated homocysteine as a cognitive and cardiovascular risk factor is one of the better-evidenced relationships in nutritional epidemiology. B6's role in managing it is mechanistically direct and worth understanding independently of the broader B vitamin conversation.

RESEARCH ON VITAMIN B6

Like with zinc and chromium, enormous bodies of research exist on vitamin B6, and, since it is not a botanical ingredient, it has far more robust approval for individual health claims at the European level.

EFSA Claims

EFSA has approved the following health claims for vitamin B6, all substantiated and currently permitted:

• Contributes to normal cysteine synthesis

• Contributes to normal energy-yielding metabolism

• Contributes to normal functioning of the nervous system

• Contributes to normal homocysteine metabolism

• Contributes to normal protein and glycogen metabolism

• Contributes to the normal function of the immune system

• Contributes to the reduction of tiredness and fatigue

• Contributes to normal red blood cell formation

• Contributes to normal hormonal activity

• Contributes to normal psychological function
  
  

International Studies

• Vitamin B-6 and immune competence
  A controlled depletion and repletion study demonstrating that B6 deficiency impairs lymphocyte proliferation and interleukin-2 production, and that these impairments are reversed with B6 repletion. The foundational study for B6's role in immune cell function.
  

• A systematic review and meta-analysis of randomized controlled trials on the effects of magnesium and vitamin B6 on stress
  Examines the interaction between B6 status and stress response, with particular relevance to populations under high psychological load and its effects on B6 depletion.
  

• Vitamin B6 treatment of premenstrual syndrome: a double-blind crossover study
  A double-blind crossover trial demonstrating significant reduction in PMS symptoms including mood changes, irritability, and bloating with B6 supplementation at 50 mg/day, with proposed mechanism via estrogen-progesterone balance.
  

• Vitamin B6 and its role in cell metabolism and physiology
  A comprehensive mechanistic review covering PLP's role across transamination, neurotransmitter synthesis, heme biosynthesis, and homocysteine metabolism. The most useful single-source overview of B6 biochemistry for readers wanting to go deeper.
  

• Homocysteine and cardiovascular disease: evidence on causality from a meta-analysis
  Establishes the relationship between elevated homocysteine and cardiovascular risk, providing the epidemiological context for B6's role in transsulfuration-mediated homocysteine clearance.
  

• Vitamin B6 deficiency and cognitive decline
  Examines the relationship between B6 status and cognitive function in older adults, finding consistent associations between lower B6 and impaired cognitive performance, with proposed mechanisms including homocysteine accumulation and reduced neurotransmitter synthesis.

HOW TO USE VITAMIN B6

In a perfect world, you get your fill of B6 from your diet, so we'll start there. If you cannot achieve sufficient B6 levels through diet alone, keep reading through this section.

Dietary sources

B6 is broadly distributed across the food supply. The richest sources are poultry (particularly chicken and turkey breast), fish (tuna, salmon, halibut), beef liver, potatoes, and starchy vegetables. Bananas are the most commonly cited fruit source, with a medium banana delivering around 0.4 mg. Chickpeas, one of the highest plant sources, deliver roughly 1.1 mg per 100g cooked.

Plant-derived B6 is less bioavailable than animal-derived B6, largely due to the presence of pyridoxine glucosides in plant foods, which are absorbed less efficiently than free pyridoxine or pyridoxal. Estimates suggest that plant-derived B6 is roughly 25 to 30% less bioavailable than the animal-derived equivalent, which is relevant for people on plant-forward diets trying to meet their B6 needs from food alone. Cooking also degrades B6 substantially, with losses of 20 to 50% depending on the method and duration.

Forms and bioavailability

Pyridoxine hydrochloride is the most widely used supplemental form, well-absorbed and efficiently converted to PLP in the liver. It is the form used in both Junai HIM and Junai HER.

Pyridoxal-5-phosphate (PLP) is the active form, sometimes marketed as more bioavailable since it bypasses the conversion step. In healthy adults with normal liver function, the practical bioavailability difference between pyridoxine HCl and PLP is modest. PLP has a legitimate advantage in people with impaired liver function, but for the general population, pyridoxine HCl is the more cost-effective and equally functional choice.

For a broader look at how bioavailability decisions affect supplement efficacy, the Junai bioavailability blog is worth reading.

Dosage

The EU RDA for vitamin B6 is 1.4 mg per day for adults. The tolerable upper intake level (UL) established by EFSA is 25 mg per day for long-term supplementation, with peripheral neuropathy (nerve damage manifesting as tingling and numbness in the extremities) as the primary concern above this threshold. Note that some older clinical studies used doses of 50 to 100 mg for PMS, which exceed EFSA's current UL for long-term use. At those doses and durations, neurological monitoring is warranted.

Junai's formulation delivers 2.8 mg per daily serving, exactly 200% of the RDA. This is a deliberate therapeutic buffer: enough to meaningfully support B6-dependent pathways in people running at the lower end of adequate status, while staying well within the range where long-term safety is not a concern.

Timing

B6 is water-soluble and doesn't accumulate in tissue the way fat-soluble vitamins do. Consistent daily intake matters more than timing. Taking it with food supports absorption and reduces the mild gastric discomfort that high-dose B6 can occasionally produce, though at supplemental doses within the normal range this is rarely an issue.

Black pepper (piperine) has some documented capacity to support the absorption of water-soluble micronutrients, and is present in both Junai HIM and Junai HER alongside B6. Zinc and B6 work in parallel across several metabolic pathways, including hormone metabolism and immune function, making their co-formulation in Junai HIM logical and deliberate.

HOW AND WHY JUNAI USES VITAMIN B6

Junai uses pyridoxine hydrochloride as the B6 source in both Junai HIM and Junai HER, at 2.8 mg per daily serving (2 capsules at 1.4 mg each), delivering 200% of the EU RDA.

The dose is intentional. The EU RDA represents the minimum required to prevent deficiency in healthy adults. At 200% of RDA, Junai's formulation provides a buffer designed to support B6-dependent pathways meaningfully, particularly for people whose dietary B6 is adequate on paper but reduced by cooking losses, or whose physiological demand is elevated by stress, hormonal fluctuation, or high training load. It remains well within EFSA's established safe upper limit of 25 mg/day.

The form choice, pyridoxine hydrochloride, is the pharmaceutical standard for good reasons: it's stable, well-absorbed, efficiently converted to PLP in healthy adults, and thoroughly characterized in the safety and efficacy literature. There is no meaningful practical advantage to PLP supplementation in the populations Junai serves.

In Junai HIM, B6 supports the hormonal and metabolic infrastructure alongside which zinc, L-arginine, L-citrulline, red maca, and black pepper operate. Its contribution is not the headline but the substrate: adequate B6 means testosterone metabolism runs cleanly, red blood cell production is not impaired, neurotransmitter synthesis has what it needs, and the biochemical environment in which the rest of the formula operates is as functional as it can be.

In Junai HER, B6's role is more prominent. The hormonal balance story, specifically estrogen clearance and the PMS symptom evidence base, is the most mechanistically grounded argument for any single ingredient in the HER formula. B6 doesn't carry HER alone, but it carries more weight there than anywhere else in the Junai lineup.

WHO NEEDS VITAMIN B6

• Women experiencing PMS symptoms including mood changes, irritability, bloating, and breast tenderness in the luteal phase, where B6's role in estrogen clearance has the most direct and best-evidenced application

• Women using oral contraceptives, which are known to deplete B6 status and increase B6 demand through their effects on estrogen and tryptophan metabolism

• Women in perimenopause or menopause, where hormonal fluctuation creates variable and elevated demand for the hepatic processing pathways B6 supports

• People following plant-forward or fully plant-based diets, where lower B6 bioavailability from plant sources and cooking losses create a consistent risk of running below optimal status

• Athletes and people with high training loads, where glycogen mobilization demand, red blood cell turnover, and post-exercise amino acid metabolism all increase B6 utilization

• People under chronic psychological or physiological stress, where HPA axis activation accelerates B6 depletion and neurotransmitter synthesis demand is elevated

• Older adults, in whom B6 status tends to decline due to reduced absorption and increased metabolic demand, and for whom homocysteine management and cognitive support are increasingly relevant

• Men concerned with hormonal metabolism and reproductive health, where B6's role in androgen processing and neurotransmitter balance supports the broader HIM formula context

• Anyone whose mood, sleep, or energy is consistently slightly off without a clear explanation, particularly when diet is nominally adequate but heavy in cooked or processed foods

WHAT TO EXPECT WITH VITAMIN B6

B6 is not a supplement with a dramatic arrival. It doesn't produce an acute effect you'll feel within an hour of taking it. What it does is restore or maintain the conditions under which a large number of physiological processes run correctly, and the felt experience of that restoration tends to be gradual and diffuse rather than sharp and attributable.

For mood and sleep, people who are running below optimal B6 status most commonly report a general improvement in mood stability and sleep quality over two to four weeks of consistent supplementation, rather than a discrete change they can point to. The floor rises. The rough edges smooth out slightly. It rarely feels like a transformation, and it shouldn't, because B6 isn't transforming anything. It's removing a bottleneck.

For PMS symptoms, the clinical literature suggests that meaningful effects on mood-related symptoms require consistent supplementation across at least two to three full menstrual cycles before drawing conclusions. Single-cycle responses exist but are not reliable enough to judge by. The women who respond most clearly are those for whom estrogen-progesterone imbalance is a significant contributor to their symptom picture, which is not every woman with PMS but is a meaningful subset.

For energy and performance, B6's contribution runs through glycogen mobilization and red blood cell function, both of which are background variables rather than felt performance levers in the short term. If B6 status was limiting either of these, the improvement shows up as a reduction in unexplained fatigue and a slight improvement in sustained output over weeks, not as a sudden surge.

For homocysteine and long-term cognitive health, this is the territory of years rather than weeks. B6's contribution here is most meaningful as a consistent daily habit maintained over time, and the outcomes it's working toward, lower cardiovascular risk and preserved cognitive function in aging, are not things you feel in the near term. They are things you invest in.

The overall picture of adequate B6 is a body running with fewer unnecessary friction points across a broad set of systems. It's not exciting. It's how a well-maintained machine is supposed to feel.

CONTRAINDICATIONS

Vitamin B6 is safe and well-tolerated at the doses used in standard supplementation and food fortification. The following deserve attention:

• Peripheral neuropathy at high doses
  The primary safety concern with B6 is sensory peripheral neuropathy, manifesting as tingling, numbness, and pain in the extremities, associated with chronic supplementation above 25 mg/day according to EFSA's established upper intake level. At doses above 50 to 100 mg/day maintained over months to years, the risk is well-documented. Some case reports exist at lower doses, though the causality at doses under 25 mg is less clearly established. Junai's 2.8 mg daily dose is far below any threshold of concern, but people combining multiple B-complex supplements or fortified foods should be aware of cumulative daily intake.
  

• Drug interactions
  B6 can reduce plasma levels of certain anticonvulsant medications, including phenobarbital and phenytoin, by accelerating their hepatic metabolism. People taking these medications should consult a healthcare provider before supplementing B6. B6 also interacts with levodopa (used in Parkinson's disease treatment): it accelerates levodopa's peripheral conversion to dopamine, reducing the amount that reaches the brain. This interaction is significant and well-documented, and people taking levodopa without a peripheral decarboxylase inhibitor should not supplement B6 without medical guidance.
  

• Pregnancy
  B6 requirements increase during pregnancy. The standard supplemental dose in Junai's formulation is appropriate, but intake above the established safe range should be discussed with a healthcare provider.
  

• Pyridoxine-dependent epilepsy
  A rare genetic condition in which seizures are dependent on, and responsive to, high-dose B6. Not relevant to the general population but worth noting for completeness.
  

If you experience tingling, numbness, or unusual neurological symptoms after beginning B6 supplementation, discontinue use and consult a healthcare professional.

QUICK RECAP OF VITAMIN B6

One of the dubiously named and lumped together group of water-soluble B vitamins, B6 is essential to the human body and over 150 of its enzymatic practices.

• Vitamin B6 exists as 6 interconvertible forms, with pyridoxal-5-phosphate (PLP) as the biologically active coenzyme, required for over 150 enzymatic reactions spanning amino acid metabolism, neurotransmitter synthesis, heme biosynthesis, glycogen mobilization, and homocysteine clearance

• PLP is a cofactor for the aromatic amino acid decarboxylases that produce serotonin, dopamine, GABA, and norepinephrine from amino acid precursors, making B6 status directly relevant to mood, motivation, sleep, and anxiety regulation

• B6 supports estrogen clearance through PLP-dependent hepatic conjugation reactions; insufficient B6 impairs estrogen excretion and is implicated in the estrogen-progesterone imbalance underlying PMS symptoms, with multiple RCTs showing meaningful symptom reduction at supplemental doses

• B6 is a cofactor for aminolevulinic acid synthase (ALAS), the rate-limiting enzyme in heme biosynthesis; without adequate B6, hemoglobin production is impaired even when iron stores are sufficient, producing a microcytic anemia that responds to B6 supplementation rather than iron

• PLP-dependent cystathionine beta-synthase and cystathionine gamma-lyase convert homocysteine to cysteine in the transsulfuration pathway; adequate B6 status keeps circulating homocysteine in check, reducing the vascular and cognitive risks associated with hyperhomocysteinemia

• B6 supports lymphocyte proliferation and antibody production through its role in nucleic acid and protein synthesis in rapidly dividing immune cells, with deficiency producing consistently impaired cellular and humoral immune responses in animal and human studies

• Plant-derived B6 is roughly 25 to 30% less bioavailable than animal-derived B6 due to the presence of pyridoxine glucosides; cooking and processing degrade B6 meaningfully, making subclinical insufficiency common in well-fed populations

• Junai uses pyridoxine hydrochloride at 2.8 mg per daily serving (200% of the EU RDA) in both Junai HIM and Junai HER, well within EFSA's established upper intake level of 25 mg/day

• The EFSA-approved claims for B6 include contributions to normal hormonal activity, normal psychological function, red blood cell formation, homocysteine metabolism, immune function, and energy-yielding metabolism, one of the broader approved claim sets for any single micronutrient

• Chronic supplementation above 25 mg/day carries a documented risk of sensory peripheral neuropathy; at Junai's 2.8 mg dose, this is not a concern