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Cognium Complete
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Verified by IngredientMD/Natrol/Cognium Complete
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Cognium Complete.

Strong evidence, strong doseNatrol, verified Oct 2026Formula verified. Independently reviewed.Independent review. Not commissioned by Natrol.

Folate is the lead active here. 12 human studies on Folate back this formula, each one cited. Each serving carries 900 mcg of Vitamin A, inside the range the published research used. Who it fits: skews toward women, adults.

Full label disclosure
17Active ingredientsWell studiedResearch base185Human studies
Cognium CompleteVerified by IngredientMD
NatrolIngredientMD
The verdict
Strong evidence, strong dose
For Skews toward women, 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 D3: Filling everyday nutrient gapsExtensively studied
Vitamin E: Filling everyday nutrient gapsWell studied
Vitamin B1: Filling everyday nutrient gapsExtensively studied
Vitamin B2: MethylationExtensively studied
Vitamin B3: Filling everyday nutrient gapsWell studied
Vitamin B6: Filling everyday nutrient gapsSupporting role
Folate: MethylationKey driver
Vitamin B12: Vitamin B12 statusExtensively studied
Zinc: Filling everyday nutrient gapsExtensively studied
Selenium: Filling everyday nutrient gapsExtensively studied
Chromium: Filling everyday nutrient gapsWell studied
Silk Protein Hydrolysate: Skin hydrationSupporting role
Phosphatidylserine: Nerve signallingWell studied
Fish Oil Concentrate: Omega 3 indexWell studied
Green Coffee Bean Extract: Oxidative stress defenceWell studied
Ginkgo Biloba Extract: Blood flowWell studied

How we read this product

Source: Supplement facts
Supplement Facts panel for Cognium Complete
  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 17 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: "Strong evidence, strong dose".

  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
185
Human studies
400 mcg
Folate
900 mcg
Vitamin A
900 mcg per serving sits inside the studied 700 mcg-900 mcg range
Vitamin A, NIH ODS + Ross 2006 review
1 mg per serving sits inside the studied 1 mg-50 mg range
Vitamin B1, NIH ODS + Lonsdale 2006 review
400 mcg per serving sits inside the studied 400 mcg-800 mcg range
Folate, NIH ODS + Bailey 2015 review

Cross-checked against 2,882 documented interactions for these actives.

Read the evidenceVitamin A, the evidence →Vitamin D3, the evidence →Vitamin E, the evidence →Vitamin B1, the evidence →Vitamin B2, the evidence →Vitamin B3, the evidence →

Inside the formula

Vitamin A
Filling everyday nutrient gaps
Studied 700 mcg to 3 mg a day
Extensively studied
Vitamin D3
20 studies
Filling everyday nutrient gaps
Extensively studied
Vitamin E
15 studies
Filling everyday nutrient gaps
Well studied
Vitamin B1
Filling everyday nutrient gaps
Extensively studied
Vitamin B2
11 studies
Methylation
Extensively studied
Vitamin B3
Filling everyday nutrient gaps
Well studied
Vitamin B6
Filling everyday nutrient gaps
Supporting role
Folate
12 studies
Methylation
Studied 400 mcg to 1 mg a day
Key driver
Vitamin B12
17 studies
Vitamin B12 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
Chromium
13 studies
Filling everyday nutrient gaps
Studied 25 mcg to 500 mcg a day
Well studied
Silk Protein Hydrolysate
Skin hydration
Supporting role
Phosphatidylserine
Nerve signalling
Studied 100 mg to 600 mg a day
Well studied
Fish Oil Concentrate
15 studies
Omega 3 index
Well studied
Green Coffee Bean Extract
Oxidative stress defence
Well studied
Ginkgo Biloba Extract
Blood flow
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.

53 more
Vitamin B3

Randomised trial, 2002

In 18 people, 5 percent topical niacinamide reduced facial dark spots and lightened skin over 4 weeks, by lowering pigment transfer in lab tests.

British Journal of Dermatology
Folate

Randomised trial, 2007

In 818 adults aged 50 to 70 with raised homocysteine, 3 years of daily folic acid at 800 micrograms improved memory and information-processing speed scores compared with placebo.

The Lancet
Phosphatidylserine

Randomised trial, 2010

Over 15 weeks, older adults with memory complaints taking phosphatidylserine bound to omega-3 improved immediate verbal recall compared with placebo, in a trial of 157 participants.

The paper
Silk Protein Hydrolysate

Randomised trial, 2018

A silk fibroin enzymatic hydrolysate improved scores on memory tests compared with placebo in a double blind study.

Nutrients
Green Coffee Bean Extract

Meta-analysis, 2020

Across randomised trials, green coffee bean extract was associated with a modest reduction in fasting blood glucose, with the response varying by dose.

Phytotherapy research : PTR
Folate

Systematic review and meta-analysis, 2023

Across 21 trials in 2,025 adults, folic acid improved flow-mediated dilation, a measure of how well arteries widen, by about 2.6 percentage points.

Nutrition Journal
Fish Oil Concentrate

Meta-analysis, 2017

Across 51 trials in about 3,000 people, marine omega-3s lowered resting heart rate by about 2.2 beats per minute, an effect linked to DHA rather than EPA.

European Journal of Clinical Nutrition
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
Zinc

Meta-analysis, 2024

Across six trials in 739 women, zinc lowered menstrual discomfort scores, with bigger drops after eight weeks or more, even at doses as low as 7 mg daily.

Nutrients
Green Coffee Bean Extract

Meta-analysis, 2023

Across randomised trials, chlorogenic acid from green coffee bean was associated with a small reduction in body weight in adults carrying excess weight.

Systematic reviews
Vitamin B2

Randomised trial, 2023

One month of daily supplementation raised blood riboflavin by 0.77 standard deviation units and cut the proportion of women with low riboflavin status.

PLoS Medicine
Vitamin B2

Meta-analysis, 2024

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

Neurological Sciences
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
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
Vitamin D3

Randomised trial, 2025

Vitamin D3 supplementation changed the inflammatory protein CHI3L1 and oxidative stress markers in adults with a chronic demyelinating condition. These are markers, not clinical outcomes.

Neuropsychopharmacology Reports
Vitamin B3

Randomised trial, 2005

In a 12-week study of 50 women, twice-daily 5 percent topical niacinamide reduced the appearance of fine lines, dark spots and redness, and improved skin elasticity compared with a plain vehicle.

Dermatologic Surgery
Vitamin B3

Randomised trial, 2012

Across two 35-day studies, body moisturizers with niacinamide and glycerin improved skin hydration and lowered water loss through the skin, a marker of skin barrier health, more than no treatment or other moisturizers.

Journal of Drugs in Dermatology
Vitamin B1

Meta-analysis, 2023

Pooling 20 studies, adults with impaired glucose handling carried lower circulating thiamine than adults with normal glucose handling (standardised mean difference -0.97), an association rather than a demonstrated cause.

Metabolism
Folate

About 23 percent lower plasma homocysteine at 0.8 mg daily, with 0.2 mg and 0.4 mg reaching roughly 60 and 90 percent of that

Lowers homocysteine, a blood marker tied to heart risk. Measured in adults, standardised to a pretreatment homocysteine of 12 micromol per litre (95% CI 21 to 26 percent).

Meta-analysis
Vitamin E

Meta-analysis, 2025

Across 21 trials, vitamin E lowered oxidized LDL and lengthened the time before LDL starts to oxidize, by about 20.45 units, both lab markers of oxidation.

European Journal of Pharmacology
Chromium

Meta-analysis, 2025

Across 20 trials in adults carrying excess weight, chromium lowered fasting insulin by about 12.6 pmol/L and an insulin resistance marker by about 0.26, without a significant change in fasting glucose.

Journal of Trace Element Medicine and Biology
Vitamin B2

Randomised trial, 2013

In adults with the MTHFR 677TT genotype, riboflavin at 1.6 mg a day lowered systolic blood pressure by about 5.6 mmHg over 16 weeks.

The paper
Wilson et al., 2013PMID 23608654
Vitamin B3

Randomised trial, 2026

In 39 healthy young men, nine days of 714 mg nicotinamide with 19 mg pyridoxine after damaging eccentric exercise raised the number of muscle stem cells per damaged fibre compared with placebo, a tissue-level marker rather than a strength or recovery outcome.

Advanced Science
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
Selenium

Meta-analysis, 2026

In adults with metabolic risk factors, selenium supplementation was linked to small changes in blood lipid and inflammatory markers, with results varying between trials.

Meta-analysis
Fish Oil Concentrate

Meta-analysis, 2026

Pooling nine placebo-controlled eccentric-exercise trials in healthy adults, long-chain omega-3 fats reduced delayed onset muscle soreness (Hedges g -0.75) and the muscle-damage marker creatine kinase (-0.40) and improved muscle strength (0.45) and range of motion (0.93) at the point of worst impairment.

Nutrients
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
Selenium

Meta-analysis, 2025

Pooling the randomised evidence, the review reports reductions in circulating thyroid autoantibody concentrations with selenium supplementation.

Medicine
Phosphatidylserine

Randomised trial, 2025

A trial of sunflower-derived phosphatidylserine measured cognitive test scores in healthy children, using the sunflower form, not the usual soy-based one.

Nutrition Journal
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
Phosphatidylserine

Systematic review and meta-analysis, 2021

Pooling three trials in children, 200 to 300 mg a day produced a small improvement in attention ratings versus placebo (effect size 0.36), while overall and hyperactivity measures did not reach significance.

Journal of Alternative and Complementary Medicine
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
Vitamin B1

Meta-analysis, 2019

Multiple-micronutrient supplements containing thiamine during pregnancy were linked to higher infant birthweight and fewer small-for-gestational-age births than iron and folic acid alone, with thiamine one component among many.

The Cochrane database of systematic reviews
Vitamin A

Randomised trial, 2026

In 306 newborns given 50,000 IU vitamin A within 48 hours of birth, the delayed skin immune response to BCG improved modestly in heavier babies, while antibody responses to polio, tetanus and hepatitis B vaccines showed no detectable change.

Vaccine
Fish Oil Concentrate

Meta-analysis, 2023

Across 90 trials in 72,598 people, higher daily DHA and EPA intake lowered blood triglycerides and non-HDL cholesterol in a near-linear way, most clear above about 2 g a day.

Journal of the American Heart Association
Vitamin B2

Randomised trial, 2025

In 43 adults, 100 mg vitamin B1 taken together with 100 mg vitamin B2 daily for four weeks lowered perceived stress scores from 21.5 to 15.5 and improved sleep quality scores, with no detectable change in anxiety scores. The two vitamins were given as one combination, so B2 alone was not isolated.

Nutrients
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
Vitamin B1

Meta-analysis, 2022

Across six trials in 364 adults with raised blood sugar, thiamine or benfotiamine did not shift long-term blood sugar control or fasting glucose, while HDL cholesterol rose by about 0.10 mmol/L at three months.

BMJ Open

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 D3 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 900 mcg of Vitamin A, inside the range the published research used.
  • A stated daily maintenance amountVitamin A is here at a daily maintenance amount, which is what a daily supplement is for.
  • Why this formatIt is a capsule, so the amount per serving is fixed and travels without measuring.
  • Full label disclosureEvery ingredient on this label carries its own declared amount.
  • 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 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 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
7 more
  • 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
  • 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
  • PhosphatidylserineTested out to 30 weeks of daily useBuilds with daily use

    Phosphatidylserine with DHA was safe and well tolerated in a double-blind placebo-controlled trial of 157 non-demented elderly adults at 300 mg per day for 15 weeks, and at 100 mg per day through a 30-week open-label extension.

    Vakhapova 2011PMID 21711517
    Promising
  • Fish Oil Concentrateabout 4 to 8 weeks in blood plasma, about 6 months in red blood cellsBuilds with daily use

    In the trial record, EPA in blood plasma plateaus after 4 to 8 weeks of daily fish oil, while EPA in the red blood cell membrane rises with a 28 day half-life and reaches a steady state at about 180 days.

    Promising
  • Fish Oil Concentrateabout eight weeks of daily useBuilds with daily use

    In a randomised single-blind trial, 20 participants took either fish oil supplying 1,296 mg EPA and 864 mg DHA daily or flaxseed oil for eight weeks, with erythrocyte membrane and plasma samples drawn at weeks 0, 4, 8, 10, 12, 14, 16 and 24. On fish oil, erythrocyte membrane EPA rose 300 percent and DHA rose 42 percent by week eight. Levels held until about week 12 and then declined across the post-supplementation sampling, faster in plasma phospholipids than in erythrocyte membranes. Membrane fatty acid content was measured, not a symptom, and this is one trial of 20 people.

    Cao et al., 2006PMID 17053155
    Promising

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 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 B1About two to four weeks

    Absorbed within an hour, but the timeline that counts is two to four weeks. Whole blood thiamin diphosphate is where the change gets read.

    Its own page, the plain answer on timing

  • Vitamin B2Within hours

    Bright yellow urine turns up within hours, which is simply surplus clearing. Status markers such as glutathione reductase activity respond across a few weeks of daily use.

    Its own page, the plain answer on timing

  • Vitamin B3

    On the skin, most of the change in redness and barrier feel lands between weeks four and eight. Taken by mouth it works in the NAD pool, which is measured rather than felt.

    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.

  • Silk proteinActive and formulation aid

    Milled fibroin that has not been enzymatically cleaved, poorly soluble in water

    Fits
    Cosmetic and film applications where solubility is not required
    Trade-off
    Low solubility and slower digestion than a hydrolysate

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

Format

Capsule

It is a capsule, so the amount per serving is fixed and travels without measuring.

Best forMost standard doses, and anywhere a short, clean label is the point.

Questions shoppers ask

Is Cognium Complete 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 Cognium Complete?
Cognium Complete is built on Vitamin A, Vitamin D3, Vitamin E, Vitamin B1, Vitamin B2, Vitamin B3, and more. Each ingredient links to its own evidence page on IngredientMD.
Were ingredient interactions checked?
Yes. The combination was screened against 2,882 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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