Names guide
What a supplement name is allowed to say
Claims on a supplement are regulated. Brand names are trademarks. This guide is about the gap between those two facts, and about what happens to persuasion when the words are constrained and the pictures are not.
A supplement may not claim to treat a disease, and the claims it does make must carry the FDA disclaimer. A brand name carries none of that. A name can suggest a mechanism, import medical authority through a prefix, or evoke an outcome, and none of it has to be substantiated — because legally it is an identifier rather than a claim.
What a claim is, legally
Under the Dietary Supplement Health and Education Act, a supplement may make a structure-function claim: a statement that an ingredient affects the structure or a function of the body. “Supports healthy circulation” is one. “Increases libido” is one.
What it may not do is claim to diagnose, treat, cure or prevent a disease. “Treats erectile dysfunction” crosses that line; “supports sexual health” does not. And any structure-function claim triggers a mandatory disclaimer, which is why every supplement bottle in America carries some version of the same sentence:
“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.”
The FDA-mandated disclaimer, as printed on this product
The FDA’s other important position, which surprises people, is that none of this involves approval at all: “Under DSHEA, FDA does not have the authority to approve dietary supplements before they are marketed.” No supplement on any shelf is FDA-approved.
What a name is, legally
A brand name is a trademark. Its legal job is to identify the source of a product and to distinguish it from competitors. It is examined for whether it is confusingly similar to an existing mark, and whether it is merely descriptive — not for whether it is true.
There is no substantiation requirement on a brand name, because a name is not understood in law as an assertion. That is a reasonable position: nobody thinks a car called a Jaguar is a cat. It becomes less reasonable in a category where the buyer is trying to work out whether something will affect their body.
The result is a gap. The sentence “increases libido” needs substantiation and a disclaimer. A name that makes the same suggestion in four syllables needs neither.
The four things a name can do without saying anything
Import medical authority
A prefix or suffix borrowed from pharmaceutical naming — -il, -ex, medi-, pharma-, -ceutical — places a product in a mental category it does not belong to. Four letters do the work of a paragraph, and no regulator reads them as a claim.
Suggest a mechanism
A name built on a biological word — vaso-, nitro-, testo-, -flow, -boost — proposes how the product works. Proposing a mechanism in a sentence would require evidence. Proposing it in a brand name does not.
Evoke the outcome
Names built on vigour, peak, drive, surge. These do not describe the product at all; they describe the state the buyer wants to be in, which is a form of persuasion no claims rule has ever touched.
Borrow a place or a tradition
Names invoking a country, a mountain range or an ancient practice import a whole story about provenance and long use. None of it is checkable and none of it needs to be.
Worked example: the product this site sells
It would be dishonest to write this guide and not apply it here.
Vapofil. The -il ending is the one worth noticing: it is the ending of sildenafil, tadalafil, vardenafil and the rest of the PDE5 inhibitor class. That is a real piece of pharmaceutical naming convention, and a product in the men’s sexual-performance aisle ending in -il is borrowing the shape of a drug name whether or not anybody intended it.
Nothing about that is illegal, and this desk has no way of knowing whether it was deliberate. What can be said is that the name places the product next to a drug class in the reader’s mind, and that the product is not a member of that class, does not contain anything from it, and makes no such claim on the label.
The front of this bottle is otherwise restrained. It reads Vapofil, Premium Formula, 60 Capsules, Dietary Supplement — and no structure-function claim at all. That is genuinely unusual in this aisle and it deserves saying. All four of the claims this site examines come from the marketing material rather than from the artwork.
When persuasion moves into pictures
The most interesting thing about this product’s marketing is not on the bottle. It is in the asset folder that came with it.
That folder contained an AI-generated woman in a white laboratory coat, an AI-generated man in a white coat holding the bottle, three AI-generated photographs of older men presented as customers, and the logos of the National Institute of Mental Health and PubMed.gov.
Every one of those is a claim. A clinician beside a product claims professional endorsement. A customer photograph claims a customer. A federal agency’s logo claims a relationship with a federal agency. And none of them is a statement, so none of them carries a disclaimer, and none of them was ever going to be substantiated.
That is the direction this guide is really about. As the words on a package have become more constrained, the persuasion has moved into the parts of a page that no rule reaches: the photograph, the roundel, the borrowed logo. None of it appears on this site, and the account of what was declined is printed in full rather than summarised.
The five-second test
Applicable to anything on any shelf, including this one.
- Cover the name and the front of the package. Read only the Supplement Facts panel.
- Ask what the panel alone would make you expect. Amounts, ingredients, nothing else.
- Uncover the front. If it makes you expect more than the panel did, the difference is the marketing, and the marketing is the part nobody has substantiated.
- Look at what is doing the persuading. Words can be checked against the claims rules. Pictures, roundels and logos cannot.
- Ask who is named. A distributor with a street address and a telephone number is accountable. A photograph of a person in a white coat is not.
On this product the test comes out unusually well in step three and badly in step four, which is the summary of the whole site in one sentence: a better label than the category deserves, wrapped in a marketing folder that does not match it.
A short taxonomy of supplement naming
Walk any supplement aisle and the names fall into a small number of patterns. None of them requires substantiation and each does a specific job.
| Pattern | Example shape | What it imports |
|---|---|---|
| Pharmaceutical suffix | -il, -ex, -ol, -ide | Membership of a drug class, without membership |
| Medical prefix | medi-, pharma-, clini-, neuro- | Clinical authority in four letters |
| Mechanism word | vaso-, nitro-, testo-, -flow | A proposed mode of action, unstated |
| Outcome word | peak, surge, drive, vigor | The state the buyer wants, not the product |
| Provenance | a place, a mountain, a tradition | A story about origin and long use |
| Scientific-sounding compound | a Latinate coinage with an X or a Z | Novelty and proprietary technology |
A name can combine several of these, and the strongest ones usually do. None of it is regulated as a claim, because a name is treated in law as an identifier rather than an assertion — which is defensible in most categories and awkward in this one.
What the icons do
The same logic applies a step further along. If the words are constrained and the name is not, the icons are less constrained still, and most packages in this category do a good deal of their work in pictures.
- A lightning bolt means energy. Nobody has to substantiate a lightning bolt.
- A flame means metabolism, or intensity, depending on the aisle.
- A heartbeat line means clinical measurement, which is a remarkable thing for a graphic to be able to imply.
- A shield or a tick in a circle means verification, whether or not anything has been verified.
- A laboratory flask means science was involved somewhere.
This product’s front label is unusually quiet on this count. It carries the brand name, “Premium Formula”, a capsule count and the words “Dietary Supplement”. No icons, no claim, no lightning bolts. That restraint is worth crediting and it makes the contents of the asset folder a stranger contrast.
Why this is getting worse rather than better
Two things have changed in the last few years and both push persuasion further away from the parts of a page that anyone regulates.
The first is cost. A photograph of a person in a white coat used to require a model, a photographer, a studio and a release form — a chain of people, at least one of whom might ask what the picture was for. It now takes a sentence of text and a few seconds, and nobody is asked anything.
The second is volume. Affiliate marketing distributes a single asset folder to a large number of sites that publish it without examination, because examining it is work and the folder arrives ready to use. One fabricated clinician becomes a hundred pages carrying an apparent endorsement, and each of those pages looks like independent corroboration of the others.
The countermeasure available to a reader is not visual. It is the accountability question: who is named, and can they be checked? A distributor with a company name, a street address and a telephone number printed on a bottle is answerable for what is in it. A photograph is answerable for nothing, however convincing it looks and however many sites carry it.
Read the panel first, then decide
Sixty capsules, two a day, seven actives itemised and two extract ratios printed — better label work than most of this aisle. What is missing is standardisation, and two of the seven ingredients have no monograph anywhere we looked. The live price and the 60-day return terms are both on the seller’s checkout screen.
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