How it is meant to work
A mechanism explains what an ingredient does when enough of it is present. It says nothing about whether enough is present. Both halves belong on this page, and most product sites only publish the first.
The claim on the label
The bottle says ADVANCED MEMORY SUPPORT, with an asterisk pointing at the standard FDA disclaimer. That is a structure/function claim. It is not a claim to treat memory loss, and it does not require FDA approval or evidence review before it is printed.
Structure/function claims are permitted so long as the manufacturer has substantiation on file, notifies the FDA within thirty days of first marketing, and prints the disclaimer. None of those steps involves the agency reviewing the evidence, and none of them is visible to a buyer.
So the label claim is a legal artefact, not a finding. The useful question is what the twenty-two named ingredients are associated with in the literature, and whether a one-millilitre serving can carry enough of any of them.
Four mechanisms the list points at
Adaptogens and stress response
Panax ginseng, eleuthero, astragalus and maca are all traditionally used for fatigue and stress tolerance. Ginseng has the strongest modern file of the four for cognitive outcomes.
Positions 1, 5, 6 and 12 on this label
Catecholamine precursors
L-tyrosine is the precursor to dopamine and noradrenaline. The well-known trials gave it before a stressor and measured working memory under load, not everyday cognition.
Position 15
Polyphenols and blood flow
Grape seed and green tea extracts are studied for vascular and antioxidant effects, and cerebral blood flow is the usual proposed route to a cognitive outcome.
Positions 3 and 7
Stimulation
Guarana carries caffeine. The guarana cognition literature is the cleanest short-term effect on the list, and caffeine is the most likely explanation for it.
Position 4
Those four families cover ten of the twenty-two names. The remaining twelve include two metabolic botanicals, a flavour agent, four amino acids studied at multi-gram doses, and an ingredient with no human cognition trial at all.
The second half of the question
Every mechanism above is real in the sense that it has been described in published work. None of them is self-executing. A precursor has to reach a concentration before it shifts synthesis; a polyphenol has to reach a plasma level before it affects a vessel; caffeine has to reach a dose before anyone notices it.
Split evenly that is 0.737 mg each. It is not split evenly, and the label does not say how it is split.
That is the arithmetic in one picture. Fourteen of the sixteen ingredients with a researched dose cannot reach it, even after the label's own extract ratio is granted in full and even measuring against the lowest dose in the published range.
What a liquid changes, and what it does not
Sublingual and liquid formats are often described as more bioavailable, and for a few specific molecules that is defensible. It is worth separating the parts of that claim that hold from the parts that do not.
| Claim | How it holds up |
|---|---|
| Faster onset | Plausible for anything absorbed in the mouth. The label instructs you to swallow, which routes it through the gut like a capsule. |
| Higher bioavailability | True for some molecules that are degraded in the stomach or heavily first-pass metabolised. Not a general property of liquids. |
| Easier to take | True, and not a small thing for daily adherence. |
| More can fit | The opposite. A millilitre is a hard physical constraint. Twenty-one extracts and amino acids in 1 ml is the binding problem on this label. |
The solubility point we could not verify
It is often said that a millilitre of water can only hold a few hundred milligrams of dissolved solids before saturation. We could not find a citable source that states a general ceiling, because it depends entirely on which solids. So we are not using that argument. The 15.47 mg figure is the manufacturer's own declaration, and it is all the argument needed.
What would change the answer
- A published split of the 15.47 mg. If any single ingredient turns out to carry a researched dose, that ingredient's row changes and this site says so.
- A standardisation figure for the extracts. A 50-fold standardised ginsenoside fraction would move the ginseng row, though not by the 155-fold it needs.
- A human trial of this finished formula. None exists that we could find.
- A certificate of analysis showing measured content rather than a reference number.
Those are the four things that would move this page. We would publish any of them, and we would rather be shown to be wrong with a document than be right by default.
See the Cognizil packs
Two, three or six bottles, priced plainly, with a 180-day window on the sales page kits. Read the best case first, then decide.
Shipping is calculated at checkout. This site publishes no figure it was not given.
References
Every source below was opened and read. Nothing here cites a study we did not read, and no identifier on this site was written from memory.
- U.S. Government Publishing Office21 CFR 101.36 — Nutrition labeling of dietary supplements — eCFR.gov · source
- U.S. Food and Drug AdministrationDietary Supplement Labeling Guide: Chapter IV, Nutrition Labeling — FDA.gov · source
- U.S. Food and Drug AdministrationDaily Value and Percent Daily Value: Changes on the New Nutrition and Supplement Facts Labels — FDA.gov · source
- U.S. Food and Drug AdministrationGrapefruit Juice and Some Drugs Don’t Mix — FDA.gov · source
- U.S. Food and Drug AdministrationFDA Calls on Certain Firms to Stop Producing and Issuing Misleading ‘FDA Registration Certificates’ — FDA.gov · source
- Booker, Frommenwiler, Reich et al. — 2022Understanding plant to extract ratios in botanical extracts — Frontiers in Pharmacology · DOI 10.3389/fphar.2022.981978 · source
- Shin, Lee, Yang, Lim & Ernst — 2010Maca (L. meyenii) for improving sexual function: a systematic review — BMC Complementary and Alternative Medicine · PMID 20691074 · source
- Ngondi, Etoundi, Nyangono et al. — 2009IGOB131, a novel seed extract of the West African plant Irvingia gabonensis, significantly reduces body weight and improves metabolic parameters in overweight humans — Lipids in Health and Disease · PMID 19254366 · source
- Centre for Reviews and DisseminationThe efficacy of Irvingia gabonensis supplementation in the management of overweight and obesity: a systematic review of randomized controlled trials — NCBI Bookshelf (DARE) · NBK132337 · source
- Zhang, Liu, Li et al. — 2016The impact of grape seed extract treatment on blood pressure changes: a meta-analysis of 16 randomized controlled trials — Medicine (Baltimore) · PMID 27537554 · source
- Congretel, Bonnet, Gaudel et al. — 2023Effect of Guarana (Paullinia cupana) on Cognitive Performance: A Systematic Review and Meta-Analysis — Nutrients · PMID 36678305 · source
- European Medicines Agency, Committee on Herbal Medicinal ProductsAssessment report on Eleutherococcus senticosus (Rupr. et Maxim.) Maxim., radix — ema.europa.eu · source
- Schaffler, Wolf & Burkart — 2013No benefit adding Eleutherococcus senticosus to stress management training in stress-related fatigue/weakness, impaired work or concentration — Pharmacopsychiatry · PMID 23740477 · source
- Pop, Cherecheș, Buzoianu et al. — 2021Standardized astragalus extract for attenuation of the immunosuppression induced by strenuous physical exercise: randomized controlled trial — Journal of the International Society of Sports Nutrition · PMID 34271953 · source
- Zhang, Lin, Xu, Leung & Chan — 2014Astragalus (a traditional Chinese medicine) for treating chronic kidney disease — Cochrane Database of Systematic Reviews · CD008369.pub2 · source
- European Food Safety Authority — 2018Scientific opinion on the safety of green tea catechins — EFSA Journal · DOI 10.2903/j.efsa.2018.5239 · source
- National Institute of Diabetes and Digestive and Kidney DiseasesGymnema, in LiverTox: Clinical and Research Information on Drug-Induced Liver Injury — NCBI Bookshelf · NBK610217 · source
- Godard, Johnson & Richmond — 2005Body composition and hormonal adaptations associated with forskolin consumption in overweight and obese men — Obesity Research · PMID 16129715 · source
- Henderson, Magu, Rasmussen et al. — 2005Effects of Coleus forskohlii supplementation on body composition and hematological profiles in mildly overweight women — Journal of the International Society of Sports Nutrition · PMID 18500958 · source
- Zsiborás, Matics, Hegedűs et al. — 2023The effects of capsaicin intake on weight loss among overweight and obese subjects: a systematic review and meta-analysis of randomised controlled trials — British Journal of Nutrition · PMID 36938807 · source
- Takeoka, Dao, Wong, Lundin & Mahoney — 2001Identification of benzethonium chloride in commercial grapefruit seed extracts — Journal of Agricultural and Food Chemistry · PMID 11453769 · source
- Avula, Dentali & Khan — 2007Simultaneous identification and quantification by liquid chromatography of benzethonium chloride, methyl paraben and triclosan in commercial products labeled as grapefruit seed extract — Die Pharmazie · PMID 17867553 · source
- Zeng, Li, Wang et al. — 2024Effects of Ginseng on Cognitive Function: A Systematic Review and Meta-Analysis — Phytotherapy Research · PMID 39474788 · source
- Operational Supplement Safety, Consortium for Health and Military PerformanceRaspberry ketone dietary supplements for weight loss — opss.org · source
- Gleeson — 2008Dosing and efficacy of glutamine supplementation in human exercise and sport training — Journal of Nutrition · PMID 18806122 · source
- Deijen & Orlebeke — 1994Effect of tyrosine on cognitive function and blood pressure under stress — Brain Research Bulletin · PMID 8293316 · source
- McNeal, Meininger, Wilborn et al. — 2018Safety of dietary supplementation with arginine in adult humans — Amino Acids · PMID 29858688 · source
- Collier, Casey & Kanaley — 2005Growth hormone responses to varying doses of oral arginine — Growth Hormone & IGF Research · PMID 15809017 · source
- Trexler, Smith-Ryan, Stout et al. — 2015International Society of Sports Nutrition position stand: Beta-Alanine — Journal of the International Society of Sports Nutrition · PMID 26175657 · source
- Joint FAO/WHO Expert Committee on Food AdditivesGlycyrrhizinic acid — evaluation and intake guidance — WHO JECFA database · source
- Hepsomali, Groeger, Nishihira & Scholey — 2020Effects of oral gamma-aminobutyric acid (GABA) administration on stress and sleep in humans: a systematic review — Frontiers in Neuroscience · DOI 10.3389/fnins.2020.00923 · source
- Sutanto, Loh, Kim & Kim — 2021The impact of tryptophan supplementation on sleep quality: a systematic review, meta-analysis, and meta-regression — Nutrition Reviews · PMID 33942088 · source
- NIH Office of Dietary SupplementsCarnitine — Health Professional Fact Sheet — ods.od.nih.gov · source
- NIH Office of Dietary SupplementsChromium — Health Professional Fact Sheet — ods.od.nih.gov · source
- U.S. Food and Drug AdministrationQuestions and Answers on Dietary Supplements — FDA.gov · source