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VERIFIED BYingredientMD

Every Man's One Daily Multi.

Stronger in a pairNew Chapter, verified Oct 2026Formula verified. Independently reviewed.Independent review. Not commissioned by New Chapter.

Riboflavin is the lead active here, studied most for filling everyday nutrient gaps. 10 human studies on Riboflavin back this formula, each one cited. Each serving carries 1.7 mg of Riboflavin, inside the range the published research used. Who it fits: made for men, adults.

Clinically dosedFull label disclosure
36Active ingredientsWell studiedResearch base290Human studies
Every Man's One Daily MultiVerified by IngredientMD
New ChapterIngredientMD
The verdict
Stronger in a pair
For Made for men, adults.
How we verify

The brand submits the formula. We read the supplement facts panel and weigh dose, form and synergy against the clinical evidence. Labs test. IngredientMD verifies. The fee pays for review time, never for the outcome.

The formula
Vitamin A: Filling everyday nutrient gapsExtensively studied
Vitamin C: Iron statusExtensively studied
Vitamin D3: Filling everyday nutrient gapsExtensively studied
Vitamin E: Filling everyday nutrient gapsWell studied
Vitamin K: Filling everyday nutrient gapsExtensively studied
Thiamin: Filling everyday nutrient gapsExtensively studied
Riboflavin: Filling everyday nutrient gapsKey driver
Niacin: Filling everyday nutrient gapsWell studied
Vitamin B6: Filling everyday nutrient gapsSupporting role
Folate: MethylationExtensively studied
Vitamin B12: Vitamin B12 statusExtensively studied
Biotin: Filling everyday nutrient gapsWell studied
Pantothenic Acid: Filling everyday nutrient gapsWell studied
Iodine: Iodine statusExtensively studied
Zinc: Filling everyday nutrient gapsExtensively studied
Selenium: Filling everyday nutrient gapsExtensively studied
Copper: Filling everyday nutrient gapsWell studied
Manganese: Filling everyday nutrient gapsWell studied
Chromium: Filling everyday nutrient gapsWell studied
Molybdenum: Filling everyday nutrient gapsWell studied
Stress and Energy Support Blend: A 60 mg blend of three ingredients, listed by weight.Supporting role
Organic Schizandra (berry): The liver clearance pathways. In the 60 mg Stress and Energy Support Blend with two others, listed first.Well studied
Organic Maca (root): Energy without a stimulant. In the 60 mg Stress and Energy Support Blend with two others, listed second.Well studied
Organic Chamomile (flower): Skin barrier support. In the 60 mg Stress and Energy Support Blend with two others, listed third.Supporting role
Cardio Support Blend: A 20 mg blend of three ingredients, listed by weight.Supporting role
Organic Fenugreek (seed): Feeding the bacteria that make butyrate. In the 20 mg Cardio Support Blend with two others, listed first.Well studied
Organic Oregano (leaf): A balanced gut microbiome. In the 20 mg Cardio Support Blend with two others, listed second.Supporting role
Organic Hawthorn (berry and seed): Heart and circulation. In the 20 mg Cardio Support Blend with two others, listed third.Well studied
Immune Support Blend: A 20 mg blend of three ingredients, listed by weight.Supporting role
European Elder (berry) Extract: Oxidative stress defence. In the 20 mg Immune Support Blend with two others, listed first.Well studied
Organic Eleuthero (root): Energy without a stimulant. In the 20 mg Immune Support Blend with two others, listed second.Extensively studied
Organic Astragalus (root): A balanced gut microbiome. In the 20 mg Immune Support Blend with two others, listed third.Well studied
Ginger (rhizome) hydroethanolic extract: Part of this formulaSupporting role
Organic Turmeric (rhizome) powder: Part of this formulaSupporting role
Organic Ginger (rhizome) supercritical extract: RegularityExtensively studied
Organic Turmeric (rhizome) supercritical extract: Oxidative stress defenceWell studied

How we read this product

Source: Supplement facts
Supplement Facts panel for Every Man's One Daily Multi
  1. 01
    We read the label.

    The panel on the left is the one we evaluated, line by line.

  2. 02
    Every active, separately.

    All 36 actives checked against the clinical evidence: dose, form, and what the research actually shows.

  3. 03
    Then the formula as a whole.

    Doses, ratios, and how the ingredients work together. That assessment is the verdict above: "Stronger in a pair".

  4. 04
    Earned, not bought.

    The verdict is public and identical whether or not a brand pays. A formula that does not clear the bar gets nothing.

Read by the engine against 2.1 million data points from clinical trials, PubMed and more than a hundred vetted sources. No individual reviewer is named or implied.

The receipts

Well studied
Research base
290
Human studies
1.7 mg
Riboflavin
5000 iu
Vitamin A
2 mg per serving sits inside the studied 1 mg-50 mg range
Thiamin, NIH ODS + Lonsdale 2006 review
2 mg per serving sits inside the studied 1 mg-25 mg range
Riboflavin, NIH ODS + Schoenen 1998
20 mg per serving sits inside the studied 20 mg-100 mg range
Niacin, NIH ODS + AIM-HIGH trial + HPS2-THRIVE
2 mg per serving sits inside the studied 2 mg-25 mg range
Vitamin B6, NIH ODS + Dalton 1987 neuropathy study

Cross-checked against 6,624 documented interactions for these actives.

Read the evidenceVitamin A, the evidence →Vitamin C, the evidence →Vitamin D3, the evidence →Vitamin E, the evidence →Vitamin K, the evidence →Thiamin, the evidence →

Inside the formula

Vitamin A
Filling everyday nutrient gaps
Extensively studied
Vitamin C
20 studies
Iron status
Extensively studied
Vitamin D3
20 studies
Filling everyday nutrient gaps
Extensively studied
Vitamin E
15 studies
Filling everyday nutrient gaps
Well studied
Vitamin K
11 studies
Filling everyday nutrient gaps
Extensively studied
Thiamin
11 studies
Filling everyday nutrient gaps
Extensively studied
Riboflavin
10 studies
Filling everyday nutrient gaps
Studied 1.3 mg to 100 mg a day
Key driver
Niacin
Filling everyday nutrient gaps
Studied 20 mg to 500 mg a day
Well studied
Vitamin B6
Filling everyday nutrient gaps
Supporting role
Folate
12 studies
Methylation
Extensively studied
Vitamin B12
17 studies
Vitamin B12 status
Extensively studied
Biotin
Filling everyday nutrient gaps
Studied 30 mcg to 5 mg a day
Well studied
Pantothenic Acid
Filling everyday nutrient gaps
Studied 5 mg to 200 mg a day
Well studied
Iodine
13 studies
Iodine status
Extensively studied
Zinc
22 studies
Filling everyday nutrient gaps
Studied 8 mg to 30 mg a day
Extensively studied
Selenium
15 studies
Filling everyday nutrient gaps
Studied 55 mcg to 200 mcg a day
Extensively studied
Copper
Filling everyday nutrient gaps
Studied 900 mcg to 2 mg a day
Well studied
Manganese
Filling everyday nutrient gaps
Well studied
Chromium
13 studies
Filling everyday nutrient gaps
Studied 25 mcg to 500 mcg a day
Well studied
Molybdenum
Filling everyday nutrient gaps
Well studied
Stress and Energy Support Blend
A 60 mg blend of three ingredients, listed by weight.
Supporting role
Organic Schizandra (berry)
The liver clearance pathways. In the 60 mg Stress and Energy Support Blend with two others, listed first.
Well studied
Organic Maca (root)
Energy without a stimulant. In the 60 mg Stress and Energy Support Blend with two others, listed second.
Well studied
Organic Chamomile (flower)
Skin barrier support. In the 60 mg Stress and Energy Support Blend with two others, listed third.
Supporting role
Cardio Support Blend
A 20 mg blend of three ingredients, listed by weight.
Supporting role
Organic Fenugreek (seed)
11 studies
Feeding the bacteria that make butyrate. In the 20 mg Cardio Support Blend with two others, listed first.
Well studied
Organic Oregano (leaf)
A balanced gut microbiome. In the 20 mg Cardio Support Blend with two others, listed second.
Supporting role
Organic Hawthorn (berry and seed)
Heart and circulation. In the 20 mg Cardio Support Blend with two others, listed third.
Well studied
Immune Support Blend
A 20 mg blend of three ingredients, listed by weight.
Supporting role
European Elder (berry) Extract
Oxidative stress defence. In the 20 mg Immune Support Blend with two others, listed first.
Well studied
Organic Eleuthero (root)
Energy without a stimulant. In the 20 mg Immune Support Blend with two others, listed second.
Extensively studied
Organic Astragalus (root)
A balanced gut microbiome. In the 20 mg Immune Support Blend with two others, listed third.
Well studied
Ginger (rhizome) hydroethanolic extract
Part of this formula
Supporting role
Organic Turmeric (rhizome) powder
Part of this formula
Supporting role
Organic Ginger (rhizome) supercritical extract
20 studies
Regularity
Extensively studied
Organic Turmeric (rhizome) supercritical extract
Oxidative stress defence
Well studied
In context

The gap this formula speaks to.

Public health figures the engine matched to this formula's ingredients. Reported by their source, cited and dated, never written by the brand.

54 more
Pantothenic Acid

Randomised trial, 2014

An oral pantothenic acid supplement significantly lowered total facial blemish count versus placebo after 12 weeks, with fewer inflammatory blemishes.

Dermatology and Therapy
Biotin

Meta-analysis, 2025

In a network meta-analysis of 19 trials with 1,658 participants, biotin-containing preparations were among the supplements linked to greater hair density, though most individual trials were small.

Frontiers in nutrition
Vitamin D3

Meta-analysis, 2024

Across 10 trials in 318 athletes, vitamin D3 raised blood vitamin D by about 14.8 nmol/L and hinted at better muscle strength, though few trials leave that uncertain.

Frontiers in Nutrition
Biotin

Systematic review, 2017

Across 18 reported cases, all involving an existing deficiency or related condition, hair and nail growth improved after biotin, with limited evidence of benefit in people who are not deficient.

Skin Appendage Disorders
Organic Eleuthero (root)

Systematic review, 2025

Across available trials, Rhodiola rosea was linked to modest gains in endurance performance measures, with the size of the effect varying between studies.

Frontiers in nutrition
Organic Fenugreek (seed)

Systematic review and meta-analysis, 2024

Across 19 trials in adults with high blood sugar, fenugreek lowered fasting blood glucose by about 20 mg/dL and HbA1c by about 0.5 percentage points.

Heliyon
Organic Turmeric (rhizome) supercritical extract

Meta-analysis, 2022

Pooling 10 trials in people doing muscle-damaging exercise, curcumin lowered creatine kinase by about 66 IU/L, reduced soreness ratings, and widened joint range of motion by about 6.5 degrees.

Phytotherapy Research
Pantothenic Acid

Randomised trial, 2014

Pantethine, a vitamin B5 derivative, lowered LDL cholesterol by about 11 percent from baseline versus placebo over 16 weeks in adults at low to moderate cardiovascular risk.

Vascular Health and Risk Management
Niacin

Systematic review and meta-analysis, 2016

Across 14 placebo-controlled trials totaling about 9,000 people, extended-release niacin lowered blood lipoprotein(a) by about 23 percent.

Metabolism
Niacin

Systematic review and meta-analysis, 2014

Across 7 trials of 441 people, niacin improved a blood vessel dilation test by about 2 percentage points.

Vascular Medicine
Vitamin E

Randomised trial, 2023

In 160 postmenopausal women with long-standing sleep difficulty, one month of vitamin E brought the median sleep questionnaire score to 6, versus 9 on placebo, where lower means better sleep.

Nutrients
Pantothenic Acid

Randomised trial, 2015

Pantethine lowered blood triglycerides by about 17 percent from baseline over 8 weeks in adults with moderate dyslipidemia, while a related compound, coenzyme A, lowered them further.

Journal of Clinical Lipidology
Organic Eleuthero (root)

Systematic review, 2012

A review of trials on physical and mental tiredness found the results contradictory and the study methods weak, so no consistent effect could be established either way.

BMC complementary and alternative medicine
Selenium

Meta-analysis, 2019

Across 13 trials, selenium increased activity of an antioxidant enzyme and overall antioxidant capacity, and lowered a marker of fat oxidation in the blood.

Hormones
Organic Astragalus (root)

Systematic review, 2024

Across 32 trials in 2,462 adults with high blood sugar and weak kidneys, astragalus was linked to less protein in urine and a lower kidney marker, only an association.

Renal Failure
Organic Chamomile (flower)

Open-label trial, 2026

Repeated dosing of a myrrh, chamomile extract and coffee charcoal combination was reported to produce changes the authors describe as potentially beneficial. The chamomile contribution cannot be separated from the other two components.

PLoS One
Organic Oregano (leaf)

Meta-analysis, 2024

Pooling trials of aromatic herbs and spices used in the Mediterranean diet, including oregano, found small improvements in fasting blood sugar and long-term glucose markers in adults with raised blood sugar.

Nutrients
Organic Fenugreek (seed)

Systematic review and meta-analysis, 2023

Pooling seven trials with 449 participants, fenugreek raised total testosterone by a small amount (standardized mean difference 0.32) in male athletes, with no effect shown for female athletes.

International Journal of Sports Medicine
Selenium

Meta-analysis, 2018

Pooling trials, selenium raised the share of motile sperm by about 3.3 percentage points, with a smaller rise in normally shaped sperm and a higher sperm concentration.

Advances in Nutrition
Organic Oregano (leaf)

Randomised trial, 2022

In 24 male soldiers, a single 500 mg dose of oregano after a hard physical test lowered several muscle damage and oxidative stress markers and raised antioxidant capacity compared with placebo.

Nutrients
Organic Turmeric (rhizome) supercritical extract

Meta-analysis, 2023

Across 66 randomised trials, turmeric and curcumin lowered C-reactive protein by about 0.58 mg/L and interleukin-6 by about 1.31 pg/mL, while no change was detected in interleukin-1 beta.

Cytokine
Thiamin

Cohort study, 2026

Reports an association between dietary thiamin, riboflavin and niacin intake and elevated blood pressure and pulse pressure. An association in intake data, not a demonstration of cause.

Medicine
Riboflavin

Meta-analysis, 2024

In a dose-response meta-analysis of randomised trials, riboflavin was associated with about 1.3 fewer severe recurring headache attacks per month compared with control.

Neurological Sciences
Organic Astragalus (root)

Meta-analysis, 2025

Pooling controlled trials of astragalus polysaccharides given alongside conventional hospital care, the authors report differences in reported quality-of-life and tolerability measures versus control. The trials were mostly small and conducted in one region.

Naunyn-Schmiedeberg's Archives of Pharmacology
Organic Maca (root)

Meta-analysis, 2022

Across five randomised trials, maca did not measurably raise sperm concentration versus placebo (weighted mean difference 2.22, 95% CI -2.94 to 7.37), and the authors describe the effect on semen measures as unclear given the small samples.

Frontiers in Pharmacology
Copper

Meta-analysis, 2021

Pooling randomised trials in adults, copper supplementation produced no detectable change in total or LDL cholesterol, which is a failure to detect a difference rather than evidence that none exists.

Biological Trace Element Research
Thiamin

Randomised trial, 2019

Thiamin supplementation did not improve left ventricular ejection fraction in the participants studied. This is a failure to detect a difference in an imaging marker, not evidence that no difference exists.

The American Journal of Clinical Nutrition
Zinc

Meta-analysis, 2011

Across 36 studies in children under five, zinc modestly increased height growth, adding roughly 0.37 cm at about 10 mg a day for 24 weeks.

BMC Public Health
Vitamin A

Meta-analysis, 2022

Across 19 trials of about 1.2 million children in vitamin A deficient settings, supplementation lowered all-cause mortality by 12 percent (risk ratio 0.88), rated high-certainty evidence.

Cochrane Database of Systematic Reviews
Vitamin E

Meta-analysis, 2022

Across 8 trials in 1,002 women, vitamin E taken by mouth reduced reported menstrual cramp pain compared with placebo, with the clearest effect in the first month.

Clinical Nutrition ESPEN
Riboflavin

Meta-analysis, 2025

A nutrition-status analysis in children included thiamin among the micronutrients measured, reporting intake and status data rather than a result of giving supplements.

Journal of Human Nutrition and Dietetics
Thiamin

Randomised trial, 2026

Thiamin supplementation improved the thiamin pyrophosphate effect, a blood marker of thiamin adequacy, in children whose levels were low.

Scientific reports
Organic Chamomile (flower)

Open-label trial, 2026

Chamomile supplementation was evaluated for effects on hormonal and metabolic laboratory markers in women with a reproductive endocrine condition. The reported endpoints are markers, not clinical outcomes.

Food Science and Nutrition
Vitamin A

Randomised trial, 1998

Weekly vitamin A lowered the incidence of night blindness in pregnant women from 10.7 percent to 6.7 percent, and by about 67 percent among those who took nearly all of their doses.

Journal of Nutrition
Copper

Systematic review and meta-analysis of observational studies, 2025

Pooling observational studies, higher dietary copper intake was associated with slightly higher lumbar spine bone mineral density (mean difference 0.02 g/cm2), while the hip difference was not statistically significant.

Calcified Tissue International
Riboflavin

Meta-analysis, 2021

Pooling nine controlled trials in 673 people, vitamin B2 at 400 mg per day for three months lowered the frequency, days, duration and pain score of severe recurring headache attacks.

Nutritional Neuroscience
Chromium

Meta-analysis, 2021

Pooling 24 randomized trials in adults with high blood sugar, chromium supplementation was linked to small reductions in triglycerides (about 6.5 mg/dL) and total cholesterol (about 7.8 mg/dL) and a small rise in HDL cholesterol (about 2.2 mg/dL), effects the authors described as small and possibly below clinical importance.

Journal of Trace Elements in Medicine and Biology

Population figures from public health data. Context for the category, not a statement about any individual and not a claim about this product.

What this formula earned

Every one of these is a fact the engine could ground.

Each line below was derived from this formula's own record at the time of verification. Nothing here was written by the brand, and nothing can be added that the evidence does not carry.

  • Studied in people22 human studies on Zinc back this formula, each one cited.
  • A mechanism that is settledHow Vitamin A and Vitamin C work is settled pharmacology.
  • Studied together, not just separatelyVitamin A and Vitamin E have been studied together, not only separately.
  • Recent work on the recordThe most recent study on this record was published in 2026.
  • Serving amount inside the studied rangeEach serving carries 1.7 mg of Riboflavin, inside the range the published research used.
  • A stated daily maintenance amountRiboflavin is here at a daily maintenance amount, which is what a daily supplement is for.
  • Why this formatIt is a tablet, so the amount per serving is fixed and it stores well.
  • The exact form, describedThe label names its forms exactly: Retinyl palmitate, Ascorbic acid, Vitamin D3 in a carrier oil, lanolin-derived. The record says what each one is and what it suits.
  • An absorption partner in the same servingVitamin C is in the same serving as Organic Fenugreek (seed), where it has a measured absorption role.
  • A declared blend totalStress and Energy Support Blend declares its total, 60 mg per serving, with 3 ingredients listed by weight.
  • Where it comes from and how it is madeVitamin A is made by more than one route.
  • Positions this formula already qualifies forThis formula already qualifies for positions beyond the one it is sold into, on the evidence it carries.
  • A position nobody is holding yetSome of those positions are ones almost nobody is selling to yet.
  • Interaction screen on the recordEvery active on this label was screened against the interaction record, and the screen is published with it.
Studied together

The combinations the trials actually measured.

Two pairings in this formula have been studied as combinations in human trials. Each finding below is what a named study measured, cited and dated, never written by the brand.

  • Zinc + SeleniumImmune

    In a two-year trial in older adults, zinc taken together with selenium improved the antibody response to influenza vaccination.

    Early
  • Folate + Vitamin B12 + Vitamin B6Heart

    In a 2025 network meta-analysis of 16 randomized trials in healthy adults, folic acid taken together with vitamins B6 and B12 lowered blood homocysteine more than any single supplement, with the 1 mg folic acid plus 7.2 mg B6 plus 20 micrograms B12 arm ranked most effective versus placebo (mean difference -1.03 micromol/L, 95% CI -1.71 to -0.36).

    Promising

Research strength. Research strength says how much work stands behind the combination. It is never a product score.

Fail closed. Where actives were studied on their own rather than together, each shows on its own evidence, never a combined effect no trial measured.

Independent record. Every finding is cited to a named trial, dated, and never written by the brand.

Findings from trials that studied these actives as a combination. Context for how the actives were tested together, not a statement about any individual and not a claim about this product.

What the trials show

What the trials show about timing.

Time-to-effect windows the engine read from the trial record. Each is a window a named study measured, cited and dated, never written by the brand.

  • Vitamin Cwithin 24 hours of a single doseMeasured within a day

    In a randomised crossover trial, 12 healthy adults consumed 101.7 mg of vitamin C as a powder, as raw fruits and vegetables, or as juice, and plasma vitamin C rose after every intake form, with plasma and urinary levels tracked over the 24 hours following the single dose.

    Strong
  • Vitamin D3about 3 months of daily useBuilds with daily use

    In the trial record, blood vitamin D rises for about 3 months of daily vitamin D3 and then holds at a plateau, near 69 nmol/L at 1,000 IU a day, from a starting level near 41 nmol/L.

    Early
  • Vitamin Eabsorbed slowly, tracked over 72 hoursMeasured within a day

    In a 3-phase crossover using two deuterium-labelled forms of alpha-tocopherol, healthy women absorbed about 55 percent of an oral dose taken with a 40 percent fat meal and about 64 percent with a fat-free meal, with samples tracked over 72 hours. The authors conclude absorption is not limited by absent fat or fasting, and that vitamin E leaves the intestine by a prolonged process.

    Promising
  • Vitamin Kabout four weeks of daily useBuilds with daily use

    A double-blind randomised dose-finding trial gave 60 postmenopausal women aged 50 to 69 either 0, 50, 100 or 200 micrograms of menaquinone-7 daily for four weeks on a controlled diet. The ratio of carboxylated to undercarboxylated osteocalcin rose dose dependently, with significant differences from the 0 microgram group at 100 and 200 micrograms. A companion 12-week trial in 120 people aged 20 to 69 confirmed the change at 100 micrograms daily. Both studies were run by authors affiliated with the R and D division of J-Oil Mills. An independent 8-week double-blind trial in 55 healthy prepubertal children found the same direction at 45 micrograms daily. What was measured is a blood marker of vitamin K status, not bone density and not a sensation.

    Promising
  • Vitamin Kthree years of daily use, with measurements at one, two and three yearsBuilds with daily use

    A double-blind randomised trial gave 244 healthy postmenopausal women either placebo or 180 micrograms of menaquinone-7 daily for three years, with bone mineral density measured by DXA at baseline and after each year. Menaquinone-7 decreased the age-related decline in bone mineral content and bone mineral density at the lumbar spine and femoral neck, but not at the total hip. The effect is a slowed decline rather than a gain, and the trial ran three years rather than weeks.

    Promising
  • Thiaminabout 18 to 30 days of restricted intakeBuilds with daily use

    In the controlled depletion study the EFSA reference opinion reviews, restricting thiamin intake to 0.009 to 0.015 mg/MJ for 30 days brought urinary free thiamin excretion from a mean of 0.283 mg/24 h down to undetectable levels by day 18 of the depletion period.

    Promising
16 more
  • Thiaminabout 1 week of renewed intakeBuilds with daily use

    In the same depletion and repletion record the EFSA reference opinion reviews, erythrocyte transketolase activity fell progressively to about 75% of baseline during the 30-day depletion period and returned to its baseline value after 1 week of thiamin repletion.

    Promising
  • Riboflavinabout 8 weeks of daily intakeBuilds with daily use

    In an intervention the EFSA reference opinion reviews, adults whose baseline riboflavin intake and status were unknown received 5 mg/day of riboflavin for 8 weeks, and haemoglobin concentration, haematocrit and erythrocyte count all rose significantly over that period.

    Early
  • Vitamin B6about 20 to 40 days to clear after stoppingBuilds with daily use

    An expert consensus on vitamin B6 use, developed by a six-member Delphi panel with a structured evidence-quality assessment, calculated from pharmacokinetic parameters that complete clearance of vitamin B6 from the body takes a washout period of about 20 to 40 days after intake stops.

    Early
  • Folatea median of about 36 weeks of daily intakeBuilds with daily use

    A systematic review and Bayesian meta-analysis drew on 108 articles from 14,002 screened records and modelled blood folate against folic acid intake using one-compartment pharmacokinetic models. Red blood cell folate rose 1.78 fold from baseline to steady state at 375 to 570 ug folic acid per day, and reaching that steady state took a median of 36 weeks, 95% credible interval 27 to 52 weeks. Serum or plasma folate rose 11.6% for every 100 ug per day of folic acid intake, 95% credible interval 8.4 to 14.9.

    Strong
  • Folateabout 18 days for serum folate to reach its maximumBuilds with daily use

    A kinetic study in six healthy men aged 22 to 31 gave 3.6 umol per day, 1.6 mg, of deuterium-labelled folic acid for four weeks, with folate tracked in serum, erythrocytes and urine by microbiological assay and gas chromatography mass spectrometry. Serum folate reached its maximum concentration in about 18 days, while isotopic labelling of erythrocyte folate kept rising across the whole four weeks. After supplementation stopped, red blood cell folate and urinary folate excretion declined linearly, and serum folate fell with a slow-phase half-life of 18.7 days. One study, six men, no control group.

    Early
  • Vitamin B12about 16 weeks of daily oral useBuilds with daily use

    A randomised, double-blind, parallel-group dose-finding trial in 120 older people with mild vitamin B12 deficiency, defined as serum B12 of 100 to 300 pmol/L with methylmalonic acid at or above 0.26 umol/L, gave daily oral cyanocobalamin at 2.5, 100, 250, 500 or 1000 ug for 16 weeks. Mean plasma methylmalonic acid fell 16%, 16%, 23%, 33% and 33% across those doses. Daily doses of 647 to 1032 ug accounted for 80% to 90% of the estimated maximum reduction. The window was measured on a blood marker of B12 status, not on a symptom.

    Promising
  • Vitamin B12serum levels peak about seven hours after a single tabletMeasured within a day

    An open-label randomised single-dose pharmacokinetic study in 20 healthy men aged 20 to 45, conducted and authored by staff of Emisphere Technologies, the developer of the SNAC carrier under test, measured serum vitamin B12 after one 5 mg cyanocobalamin tablet, with six men on the marketed tablet. Time to peak serum B12 was 6.83 hours for the marketed tablet and 0.5 hours for the carrier coformulation. Absolute bioavailability was 2.16% and 5.09% respectively. One trial, six men per arm. Serum concentration was measured, not any symptom.

    Early
  • Biotinabout 5 to 6 months of daily useBuilds with daily use

    In an open trial with no placebo arm, 71 patients with brittle or splitting fingernails took 2.5 mg of biotin a day. Of the 45 cases that could be evaluated, 41 were rated as having firmer and harder nails after an average of 5.5 months of treatment, standard deviation 2.3 months. The rating was clinical judgement rather than an instrument reading, and there was no control group, so the window describes when the raters recorded change, not a placebo adjusted effect.

    Early
  • Iodinefrom about eight weeks, deepening through twenty-four weeksBuilds with daily use

    In a 24 week randomised double-blind placebo-controlled trial in 112 mildly iodine-deficient New Zealand adults aged 18 to 40, 150 micrograms of iodine a day as potassium iodate lowered thyroglobulin, a blood marker of iodine status, by 12 percent at 8 weeks, 20 percent at 16 weeks and 27 percent at 24 weeks compared with placebo. Median urinary iodine reached 168 micrograms per litre against 79 on placebo. TSH and free T4 stayed within normal range and did not change significantly.

    Promising
  • Zincover about five days of lozenges started within 24 hours of symptom onsetBuilds with daily use

    Across three randomised placebo-controlled trials pooled as individual patient data (199 adults with naturally acquired colds, 80 to 92 mg of elemental zinc a day as acetate lozenges), 70 percent of the zinc group had recovered by day 5 against 27 percent on placebo, and colds ran 2.73 days shorter against a 7 day average duration. A separate meta-analysis of seven lozenge trials (575 participants, doses above 75 mg a day, zinc acetate or zinc gluconate) measured cold duration 33 percent shorter, with no significant difference between the two salts.

    Strong
  • Zincabout two to four weeks of daily intakeBuilds with daily use

    In a controlled feeding study in nine healthy men, six weeks of restricted zinc intake raised DNA strand breaks in peripheral blood cells, and four weeks of repletion at 11 mg a day, with 20 mg of supplemental zinc for the first seven days, reversed the rise. In a separate randomised placebo-controlled trial in 40 Ethiopian women eating a high-phytate diet, 20 mg a day of zinc sulfate for 17 days lowered mean comet tail moment from 39.7 to 30.0 while plasma zinc did not change significantly. Both windows were measured on a DNA damage marker in blood cells, not on a symptom.

    Early
  • Seleniumabout ten weeks of daily useBuilds with daily use

    In a 12 week randomised double-blind placebo-controlled trial in 119 healthy UK adults aged 50 to 64, mean plasma selenium rose from 95.7 ng/mL at baseline to steady state by week 10, reaching 118.3, 152.0 and 177.4 ng/mL on 50, 100 and 200 micrograms a day of selenium-enriched yeast. Plasma selenoprotein P rose in every selenium arm. Platelet glutathione peroxidase activity did not change significantly at any dose or form.

    Promising
  • Copperabout four to eight weeks of daily useBuilds with daily use

    In an 8 week pilot with a parallel placebo group, 8 young women taking 2 mg of copper a day as copper glycinate showed a 9 percent mean rise in serum ceruloplasmin and a 75 percent rise in diamine oxidase, alongside a 39 percent fall in plasma F2-alpha isoprostanes. Erythrocyte copper-zinc superoxide dismutase did not change. In a separate 4 week double-blind crossover in 20 men with moderately high cholesterol at the same 2 mg a day, copper moved no measure across the whole group and raised superoxide dismutase and diamine oxidase only in the 10 men who started below the median. Both are small and both measured enzymes in blood, not a symptom.

    Early
  • Organic Ginger (rhizome) supercritical extractabout eleven days of daily useBuilds with daily use

    Two double blind, placebo controlled, randomised experiments with 34 and 40 volunteers gave 2 g of raw or heat treated ginger daily for 11 consecutive days, then induced muscle pain with 18 eccentric elbow flexor actions. Pain 24 hours after the exercise was 25 percent lower with raw ginger and 23 percent lower with heat treated ginger than with placebo, a modest difference, and effects on arm volume, range of motion and strength were smaller. A separate 5 day protocol in 32 recreational distance runners at 1.425 g a day reported a smaller rise in soreness while jogging after a downhill run, with unclear effects on most other outcomes.

    Promising
  • Organic Ginger (rhizome) supercritical extractwithin about two hours of a single doseMeasured within a day

    In a randomised, double blind, crossover study, 24 healthy volunteers were studied twice. After an eight hour fast they swallowed three ginger capsules totalling 1200 mg or placebo, then 500 mL of low nutrient soup one hour later, with ultrasound measurement over the following 90 minutes. Gastric half emptying time was 13.1 minutes after ginger against 26.7 minutes after placebo, and antral contractions were more frequent. What was measured was stomach motor function rather than a symptom, and no significant difference in reported gut sensations or appetite was found.

    Promising
  • Organic Turmeric (rhizome) supercritical extractmore than ten weeks of daily useBuilds with daily use

    A meta-analysis of randomised trials pooled nine trials for C reactive protein and 23 for high sensitivity C reactive protein in proinflammatory conditions. Pooled CRP fell by a weighted mean of 3.67 mg/L against placebo, and the subgroup analysis placed that fall in interventions running longer than ten weeks, with the high sensitivity CRP effect appearing in trials of ten weeks or less and at doses at or under 1,000 mg a day. An earlier meta-analysis of 19 trials in chronic inflammatory disease, with follow up of 4 to 16 weeks, found no significant change in CRP, hsCRP, IL-6 or TNF alpha. Heterogeneity was high across both reviews, and the measure is a blood marker rather than a symptom.

    Early

Windows measured in the cited trials. Context for how the active behaves over time, not a statement about any individual and not a claim about this product.

General timing

How each ingredient usually behaves over time.

12 ingredients, from each one's own page.

  • Vitamin AWeeks, not days

    Weeks to months. Liver stores buffer intake, so vitamin A status moves slowly and shows up on a blood panel rather than as a sensation.

    Its own page, the plain answer on timing

  • Vitamin CWithin hours

    Blood levels rise within hours and tissue pools fill over days. Collagen-linked changes in skin and gums build over weeks and show as tissue quality, not as a sensation.

    Its own page, the plain answer on timing

  • Vitamin D3About six to twelve weeks

    25-hydroxyvitamin D climbs over roughly six to twelve weeks of daily dosing before it plateaus. It's a blood level you watch rather than a feeling.

    Its own page, the plain answer on timing

  • Vitamin EWeeks, not days

    Plasma alpha-tocopherol climbs within days of daily intake, and anything you'd notice in skin condition is a slow change across a couple of months.

    Its own page, the plain answer on timing

  • Vitamin KWithin days

    Clotting factor carboxylation responds within days. The bone marker undercarboxylated osteocalcin shifts across roughly four to twelve weeks, so this shows up on a panel.

    Its own page, the plain answer on timing

  • Thiamin

    There is no onset to time in the usual sense. Status markers such as erythrocyte transketolase activity move across weeks, and that is where the change is read.

    Its own page, the plain answer on timing

6 more

How each ingredient usually behaves over time, from its own page on IngredientMD. General timing for the ingredient, not a measurement of this product.

Chemical form

The same ingredient, carried differently.

What each form is, and where it fits in a formula. Measured findings carry the study that reported them.

  • Cholecalciferol (vitamin D3)

    The animal-sourced form of vitamin D, made in skin under UVB light and produced commercially from lanolin. Fat-soluble, so it travels with dietary fat and is stored in body fat.

    Fits
    Raising and holding vitamin D status, and the form most supplement trials use.
    Trade-off
    Being fat-soluble it accumulates with sustained high dosing, so intakes are set against the tolerable upper level rather than topped up freely.

    In a 12-week double-blind randomised controlled trial in 108 young women in urban Bangalore, most of whom began vitamin D-deficient, daily vitamin D3 at 400, 600 or 800 IU in a fortified wafer raised serum 25-hydroxyvitamin D, parathyroid hormone fell over time, and effects on bone-turnover markers were modest and not dose specific. The 800 IU dose brought 65 percent of participants to sufficiency.

  • Riboflavin

    The free vitamin B2 molecule, an isoalloxazine ring joined to a ribitol sugar chain, supplied as the unmodified crystalline compound with no added salt or phosphate group.

    Fits
    It is the form most panels list simply as riboflavin or vitamin B2.
    Trade-off
    It is intensely yellow and only sparingly water soluble, so it can tint a finished product and tends to resist dissolving cleanly in a liquid or a fast-melt format.
  • Nicotinic acid

    The free-acid form of vitamin B3, pyridine-3-carboxylic acid. It is the reference form of niacin, a small water-soluble molecule carrying a bare carboxylic acid group on the pyridine ring.

    Fits
    The long-standing reference form for meeting a vitamin B3 requirement.
    Trade-off
    This is the form behind the familiar warm, tingling skin flush that many people notice soon after a larger dose, a recognized property of the free acid that leads some formulators to reach for an amide or ester instead.
  • D-pantothenic acid

    The free acid form of vitamin B5, an amide of pantoic acid and beta-alanine, supplied as a viscous hygroscopic oil or a stabilised liquid rather than a dry salt.

    Fits
    The un-neutralised acid carries no mineral counterion, so it suits liquid drops, syrups and formats where a calcium or sodium salt is not wanted.
    Trade-off
    It is hygroscopic and tends to draw water and turn sticky, which makes it awkward to hold as a dry powder without added stabilisers.
  • Oregano leaf

    Milled dried aerial parts containing the volatile oil in situ at a small fraction of a percent, together with rosmarinic acid and other polyphenols

    Fits
    Suits whole-herb positioning and carries the water-soluble polyphenols an oil does not
    Trade-off
    Carvacrol delivered per capsule is a fraction of that from a distilled oil, so the two are not interchangeable at the same weight

Descriptions of the form itself, read from the cited studies. Not a comparison between products and not a statement about any individual.

Format

Tablet

It is a tablet, so the amount per serving is fixed and it stores well.

Best forHigh-dose minerals and anything needing timed or delayed release.
From the same shelf

Studied alongside this brand's other formulas

Where two of this brand's products carry actives the literature has read together, the pairing and its basis are below. The evidence word is the corpus row's own confidence, never a score.

Bone Strength Take Care + Every Man's One Daily MultiEstablished

Active vitamin D switches on the calcium-binding proteins and channels in the gut lining that carry calcium across the intestinal wall, so the body absorbs far more of the calcium it takes in. With too little vitamin D, much of a calcium dose passes straight through unabsorbed.

Established biochemistry. No combination trial has tested this exact pairing.

Questions shoppers ask

Is Every Man's One Daily Multi independently verified?
Yes. IngredientMD reviewed this formula independently and verified it in Oct 2026. The verdict is earned, not bought: brands can't edit or purchase it.
What's in Every Man's One Daily Multi?
Every Man's One Daily Multi is built on Vitamin A, Vitamin C, Vitamin D3, Vitamin E, Vitamin K, Thiamin, and more. Each ingredient links to its own evidence page on IngredientMD.
Were ingredient interactions checked?
Yes. The combination was screened against 6,624 documented interactions for these actives in IngredientMD's interaction database.
Who is IngredientMD?
IngredientMD is an independent supplement-science platform. We analyze ingredients and formulas against clinical research, and we verify products only when they clear our bar. Labs run the tests. We review the results.
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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This record is not medical advice. Always consult your healthcare provider before starting any supplement regimen.

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