Buying guide
How to Choose a Brain Supplement: A Nine-Point Label Checklist
Read any brain supplement label in nine checks: serving size before price, declared amounts against hidden ones, the blend arithmetic, mineral forms, standardizations, the guarantee against the onset, a human to call, marketing against label, and whether a certificate of analysis is available. Scored against its own list, CogniMary passes four, fails four and partly passes one.
By the CogniMary Editorial Desk · Last updated September 22, 2026
Nine checks
In the order that saves you the most time
Work down the list and most labels fail before you reach the bottom. That is the point of the order.
Serving size before price
Find the serving size first, then divide the capsule count by it. A 60-capsule bottle at two a day is 30 days. The same bottle at one a day is 60. Until you have done this, no price comparison means anything.
Count the declared against the hidden
How many actives carry a printed amount, and how many sit inside a blend? On CogniMary it is four against eleven. On a fully disclosed label it is everything against nothing.
Check the blend arithmetic
Look up the studied dose of the first ingredient in the blend, since that is the largest by weight. If a single studied dose would eat half the blend, everything after it is present in token amounts.
Read the form, not just the mineral
Magnesium oxide, citrate and glycinate are not interchangeable. NIH states that citrate, lactate, chloride and aspartate are absorbed more completely than oxide. The same logic applies to every mineral on a label.
Look for a standardization
NLT 20% bacosides or NLT 50% EGCG tells you the grade of an extract. Its absence means the extract could be anything from a concentrated fraction to milled leaf powder.
Compare the guarantee against the onset
If the ingredient evidence says eight weeks and the guarantee says thirty days, the guarantee cannot do its job. Sixty days is the floor in this category.
Find a human
A phone number, an address and a named distributor. If the only contact is a form, you have no route to a refund that does not go through your card issuer.
Check what the marketing claims that the label does not
Brand images often claim energy, immunity, detoxification and gut health where the printed panel claims one thing. The gap between the two is a measure of how much the brand respects the reader.
Ask for the certificate
Email or call and ask for the certificate of analysis for your lot. The answer, and how fast it comes, tells you more than any seal on the bottle.
The same nine, applied to this product
Because a checklist that never scores anything is a decoration
| Check | CogniMary | Pass? |
|---|---|---|
| Serving size before price | 2 capsules a day, 60 a bottle, 30 days. Clearly printed. | Pass |
| Declared against hidden | Four declared, eleven inside a 635 mg blend. | Fail |
| Blend arithmetic | Bacopa alone at a studied 300 mg would be nearly half the blend. | Fail |
| Mineral forms | Magnesium oxide, the least well absorbed of the common forms. | Fail |
| Standardization | Bacopa NLT 20% bacosides, green tea NLT 50% EGCG. | Pass |
| Guarantee against onset | 60 days against a reported onset of 3 to 6 weeks. | Pass |
| A human to call | +1 (302) 200-3480, plus a named distributor with a street address on the label. | Pass |
| Marketing against label | Brand images claim energy, immunity, detoxification and gut health. The label claims memory, focus and clarity. | Fail |
| Certificate available | Reference COG-7439-26-CO published; the document itself was not supplied to this site. | Partial |
Four passes, four fails and one partial. That is a mid-market product, which is exactly where its price sits. A checklist that returned nine passes for the product the site sells would not be a checklist.
Three questions to ask before you buy anything
None of them is about the supplement
What am I actually trying to fix?
Word finding, concentration, short-term recall and mental fatigue are different problems with different causes. A single answer for all four is a marketing position, not a mechanism.
When did it change?
A gradual change over years and a change over three months are not the same thing. The second one is a reason to see a clinician before buying anything at all.
What else is going on?
New medication, poor sleep, a stressful year, alcohol, untreated hearing loss. These explain more cases than nutrient status does, and none of them is helped by a capsule.
A word on urgency
Countdown timers, stock warnings, prices that expire when you move the mouse. None of it is on this site, and all of it is worth treating as information about the seller rather than about the product.
A supplement that will help you in eight weeks does not become less helpful if you buy it on Thursday instead of Tuesday. Any page that implies otherwise is telling you what it thinks of your judgement.
Try CogniMary with 60 days to change your mind
Three bottles is $59 each with free US shipping, and it fits inside the 60-day guarantee window better than six does.
Add To Cart — $177 for 3 bottles
Order desk +1 (302) 200-3480 · Monday to Friday, 9:00am - 5:00pm ET
Red flags on a sales page
Seven patterns that say more about the seller than the product
| Pattern | What it tells you |
|---|---|
| A countdown clock on the price | The discount is not expiring. The clock resets when you reload the page, and a seller willing to do that is telling you how it views your judgement. |
| A doctor with no verifiable credentials | Search the name. A genuine clinician has a license record, publications or an institution. A stock photograph with a title under it has none of those. |
| Before-and-after imagery | Meaningless for a cognitive supplement and a warning sign on any supplement. |
| A testimonial slider you cannot pause | Reviews presented as motion rather than as text are reviews designed to be felt rather than read. |
| No returns address anywhere | A guarantee with no address behind it is a sentence, not a policy. |
| Claims that name a disease | Unlawful on a supplement in the United States. A seller breaking that rule is telling you which other rules it treats as optional. |
| A price that only appears after an email address | The email address is the product being bought. |
Where the money actually goes
A rough breakdown, so the price makes sense
People often assume most of a supplement's price is the ingredients. In this category it usually is not, and understanding that changes how you read a price tag.
For a typical direct-response supplement, raw materials and manufacturing are a modest share of the retail price. Payment processing, fulfilment, customer support and the guarantee take another slice. The largest single component is usually customer acquisition: the cost of getting someone to the page in the first place.
That is why the same bottle can be sold at very different prices by different operators, and why a cheaper competitor is not necessarily using cheaper ingredients. It is also why the multi-bottle discount is real: the acquisition cost is already spent by the time you are choosing a pack size.
The practical conclusion is not that supplements are a rip-off. It is that price alone tells you almost nothing about formula quality, which is why the nine checks above look at the label rather than the number.
Questions
How to Choose a Brain Supplement — common questions
How do I know if a supplement label is honest?
Count the ingredients with printed amounts against those inside a blend, then check whether the marketing claims more than the panel does.
What is a proprietary blend?
A group of ingredients declared as one total weight, listed in descending order, with no individual amounts. Legal, common, and it makes the formula impossible to evaluate.
Does a bigger ingredient list mean a better product?
Usually the opposite. A fixed capsule holds a fixed weight, so more names means less of each.
Is an expensive supplement better?
Only if the extra money buys disclosure or third-party testing. Paying more for a longer blend buys nothing.
How long should a guarantee be?
Longer than the time the ingredients need to work. For this category that means 60 days at minimum and 90 would be better.
Should I ask for a certificate of analysis?
Yes. It is a reasonable request, and how a company answers it is itself an answer.
References
- Office of Dietary Supplements, National Institutes of Health. Magnesium - Health Professional Fact Sheet. https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/
- U.S. Food and Drug Administration. Questions and Answers on Dietary Supplements. https://www.fda.gov/food/information-consumers-using-dietary-supplements/questions-and-answers-dietary-supplements
Every source above was opened and read on September 22, 2026. None of them tested CogniMary itself. They describe the named nutrients and plants, which is a different thing from testing this finished formula.