Can You Trust Peptide Vendor Reviews?

Paid vendor reviews and honest ones look the same on screen. Nothing in the text tells you which one you are reading.

Since October 21, 2024, a federal rule has required some kinds of paid promotion to carry a label.¹ You can check for a missing label.

The rule is 16 CFR Part 465. It asks who wrote a ranking, what they were paid, and whether you were told.² It says nothing about whether the picks are good.

What is this rule, and when did it take effect?

This rule was published on August 22, 2024 and took effect sixty days later, on October 21, 2024.² A trade regulation rule is one the Commission writes to define named practices as unfair or deceptive, so that conduct falling under it can be acted on directly. Nine sections make up the codified version, eight of them carrying operative text.¹ Each section describes a practice and the circumstances that make it a violation. None of them requires a ranking to be accurate, fair, or well reasoned.

Claims that a list is biased are hard to settle. Whether a disclosure appears has an answer you can see.

Which practices does the rule name?

Fake reviews, bought reviews, undisclosed insider reviews, seller-run review sites, review suppression and fake social-media influence are the six named practices. Each is set against a sign a reader might notice.

Provision	What it prohibits	What it looks like from your side
§ 465.2	Writing, selling or buying reviews that misrepresent that the reviewer exists or used the product³	Reviews from accounts with no other activity
§ 465.3	Reserved. No operative text in the codified rule⁴	Nothing
§ 465.4	Compensation offered in exchange for, or conditioned on, a review of a particular sentiment⁵	A discount code that arrives with a request for five stars
§ 465.5	Insiders reviewing their own business without disclosing the relationship⁶	A recommendation with no stated connection
§ 465.6	Misrepresenting that a site the business controls gives independent reviews⁷	A ranking site whose top pick never changes
§ 465.7	Threats used to remove a review, or displaying a filtered set as though it were all of them⁸	A page with no review below four stars
§ 465.8	Selling or buying fake followers, views or likes⁹	Engagement that does not match the account's reach

Column three paraphrases the provisions and is not part of them. None of those signs proves a violation on its own.

Who does the rule bind?

Part 465 reaches businesses and the people acting through them. Section 465.5 extends to a business's officers, managers, employees and agents, and to their immediate relatives. An immediate relative means "a spouse, parent, child, or sibling," and a manager means "an employee of a business who supervises other employees or agents."⁶¹⁰

An unaffiliated person who posts a ranking, takes nothing for it and sells nothing is outside that set. Part 465 does not make their list unlawful, and it does not make it correct either.

Several provisions also carry a knowledge standard, applying where the business knew or should have known of the misrepresentation.³ A seller cannot cure a problem by declining to look at it, and it is not strictly liable for everything posted about it either.

Does it reach someone posting a list for free?

Part 465 mostly does not. Older FTC guidance does, and it works differently.

Those guides sit at 16 CFR Part 255. They define an endorsement as a promotional message that "reflects the opinions, beliefs, findings, or experiences of a party other than the sponsoring advertiser." They apply "even if the views expressed by that party are identical to those of the sponsoring advertiser."¹¹ Section 255.5 covers a connection between the endorser and the seller "that might materially affect the weight or credibility of the endorsement." Where that connection "is not reasonably expected by the audience," it "must be disclosed clearly and conspicuously."¹² The Guides also contemplate that advertisers and endorsers may each be liable for an undisclosed connection.¹³

An individual poster does not need to run a business to fall under the Guides. A connection to the seller that a reader would not expect is enough.

What counts as an insider?

An insider can be anyone acting on the business's behalf, including people who are not on payroll. An agent is the term the rule uses. Being paid per referral can put a person there, and so can receiving free product on an ongoing basis.

Soliciting those reviews is covered too. An officer or manager violates the rule where they ask relatives, employees or agents for reviews, those reviews appear without disclosure, and the officer either discouraged disclosure, failed to instruct that it be made, or knew it was missing and did nothing.⁶

There is a carve-out that matters, and it is a reasonable one. Reviews that result from a generalized solicitation to purchasers are excluded, meaning the mass "how did we do" email. So is the case where a business is merely hosting reviews it did not procure.³ Asking all your customers for feedback is not the practice the rule is aimed at.

What does "clear and conspicuous" mean?

A disclosure counts as clear and conspicuous only where it is easy to notice, easy to understand, in the same medium and the same language as the claim it modifies, and not contradicted elsewhere.¹⁰ Those elements are set out in § 465.1 instead of being left to judgment.

Each element rules out a familiar workaround. Footer text sits away from the claim. Words spoken quickly over a video are not easy to notice. Stating on one page that nobody pays for placement, while a separate page describes paid placement, fails the contradiction test regardless of how plainly either page is written.

Of everything in the rule, these elements give a reader the most to work with. A disclosure you had to go looking for was probably not compliant.

Can a seller run its own review site?

Yes, so long as the site does not present itself as independent. Section 465.6 prohibits a business from misrepresenting that a website, organization or entity "that it controls, owns, or operates provides independent reviews" or opinions about a category of products that includes its own.⁷ A seller may publish comparisons, and nothing in the provision stops it, provided the page does not present itself as a disinterested third party.

That posture fits a ranking presented as one person's private opinion when the list is actually a sales channel. Readers cannot see who owns the page. A reader can still see whether the page claims independence, and whether anything on it explains who benefits when the top pick gets clicked.

Why does an all-positive review page matter?

An all-positive page matters only where it comes with a claim that those are most or all of the reviews submitted. Section 465.7 makes that misrepresentation a violation where reviews have been suppressed for being low-rated or negative.⁸

Legal threats come under the same section. Using "an unfounded or groundless legal threat, a physical threat, intimidation, or a public false accusation" to stop a review being written or to get one taken down is also a violation.⁸

A seller may filter reviews under criteria applied equally to all of them. Removable content includes anything defamatory, anything that reveals private information, anything clearly false, anything reasonably believed to be fake, and anything unrelated to what the seller offers.⁸ Uniformly high ratings therefore prove nothing by themselves. The rule addresses that page combined with a claim of completeness.

What about bought followers and upvotes?

Buying them is a violation. So is selling them. Section 465.8 reaches selling or distributing fake indicators of social media influence where the seller knew or should have known they were fake, and reaches buying or procuring them where they are used to misrepresent influence for a commercial purpose.⁹ Follower counts are a weak signal for peptide sourcing in any case, since the question that matters is whether a seller publishes testing a reader can match to a vial. An account presenting a large audience as evidence that its recommendations are trusted is making a claim about influence, and that claim is the thing the rule reaches.

Does the rule ban paying for reviews at all?

No. The distinction matters because the rule is often reported loosely. Section 465.4 prohibits providing compensation or other incentives "in exchange for, or conditioned expressly or by implication on," a review expressing a particular sentiment.⁵

Everything turns on the condition. Paying for a review that may be positive or negative is treated differently from paying for a positive one. Sending free product and asking for an honest review, with the relationship disclosed, is a different act from sending free product on the understanding that the review will be favorable.

Many readers will infer that understanding even where nothing is said, and the rule's "by implication" language suggests the Commission agrees that an unstated condition can still be a condition.⁵

Has anyone been enforced against?

Nothing in the Federal Register shows an action brought under this rule. That action predates it. In October 2024 the FTC published a proposed consent order against Rytr LLC, an AI writing service whose "Testimonial & Review" feature generated consumer reviews from short user inputs. The Commission alleged the company "offered a service intended to quickly generate unlimited content for consumer reviews," producing reviews that "would almost certainly be false."¹⁴

Rytr is a weaker precedent than it looks. The complaint was brought under Section 5 of the FTC Act, 15 U.S.C. 45, not under Part 465, since the rule had not taken effect at the time.

It also targeted the tool instead of any seller using it, on a theory that Rytr "furnished its users and subscribers with the means to generate written content." The complaint did not allege that any generated review was ever posted.¹⁴

Two Commissioners dissented on those grounds, arguing that no posted false review had been identified, that the service had legitimate uses, and that the theory was misapplied.¹⁴

The proposed order itself is broad. Provision I "bans Rytr from advertising, promoting, marketing, offering for sale, or selling any service dedicated to or advertised, promoted, or offered as generating consumer or customer reviews or testimonials."¹⁴

No civil penalty figure appears in the notice.¹⁴ The record shows a Commission willing to act in this area, with two of its own members thinking this action reached too far.

What did the FTC leave out?

Section 465.3 is reserved in the codified rule, with no operative text.⁴ The Federal Register document's own list of sections names § 465.3 as covering review reuse or repurposing, the practice of moving a review written about one product onto a different one.²

Both of those are accurate about the documents they appear in, and the codified text is the one that governs. In practice, taking reviews written about one product and displaying them against a different one is not addressed by its own provision in Part 465. Where it misrepresents that a reviewer used the product on the page, § 465.2 still reaches it.³

The point is small, and gaps like it get reported as settled law.

How does this site handle it?

Some vendor links on Peptide Decoding earn a commission on a purchase. Several of the provisions above describe exactly that arrangement. The disclosure page states that "every one of those links is marked where it appears," that the site accepts "no payment for coverage, placement, or ratings," and that commissions "never change the prices we show, the order of any table, a vendor's badge." It also states that where a paying vendor earns a bad mark, the mark stays.

Those are claims, and a reader is entitled to treat them as claims. They are checkable because the vendor pages show which stores carry the arrangement, and the testing facts and open FDA letters shown there do not move when the commercial relationship does.

What can you check before you buy?

Checkable things start with the lot number on the vial in your hand. A ranking is not the layer where any of that lives, whoever wrote it.

Ask for the certificate of analysis for the lot number printed on the vial you were sent, not a sample document for a different batch, and check that the two match. The COA guide covers what the purity figure does and does not establish. Check whether the seller has an open FDA warning letter. Where a named lab appears on the paperwork, Janoshik, MZ Biolabs and Colmaric are the ones that come up most often. Finnrick publishes blind-buy test results for many compounds, and those are a different kind of evidence from a seller's own document.

Then test your own first vial, and run the calculator on the concentration that came back.

Common questions

Is a peptide vendor tier list illegal?

Not by itself. Only businesses and the people acting for them come under Part 465, so a list posted by someone unaffiliated with any seller falls outside it.⁶ A list written or procured by a seller, without the relationship disclosed, is the case the rule addresses.

How can I tell if a recommendation is paid?

Often you cannot. That is why the rule requires a disclosure instead of leaving readers to detect one. You can establish whether a disclosure appears where the recommendation does, in the same medium and language.¹⁰

Does a disclosure make a paid ranking trustworthy?

It makes it legal, not accurate. A disclosed commercial relationship tells you to weigh the recommendation accordingly. Whether the product is any good is a separate question.

Do affiliate links have to be disclosed?

Where the connection might materially affect how much weight a reader gives the recommendation and a reader would not expect it, § 255.5 requires it to be disclosed clearly and conspicuously.¹² A commission on a sale is ordinarily such a connection.

Can a seller write its own reviews?

Not without disclosure. Section 465.5 requires an officer or manager reviewing their own business to disclose the material relationship, and § 465.2 separately reaches reviews that misrepresent that the reviewer used the product.⁶³

What if a seller asks everyone for reviews?

That is permitted. Reviews resulting from a generalized solicitation to purchasers are carved out of the insider and procurement provisions.³

Is it a violation to delete a bad review?

It depends on the basis. Removing reviews under criteria applied equally to all of them is allowed, including content that is defamatory, private, clearly false or unrelated to the offering.⁸ Removing low-rated reviews and then presenting what remains as most or all of those submitted is the violation.

Does the rule cover forums and comment threads?

Section 465.1 defines a consumer review as a consumer's or purported consumer's evaluation of a product, service or business, and the provisions apply to those.¹⁰ Format does not decide it. Who wrote it, what they were paid and what was disclosed are what decide it.

Does the rule reach sellers who market "research use only"?

Part 465 applies to a business, and the research label does not change what a company is.¹ Whether a buyer of research-labeled material counts as a consumer for FTC Act purposes is not resolved by anything cited on this page, so it stays an open question.

What is the difference between Part 465 and the Endorsement Guides?

Part 465 is a trade regulation rule naming specific practices by businesses.² Part 255 is guidance on endorsements, and it addresses endorsers as well as advertisers. Through the endorser it reaches an individual with an undisclosed connection to a seller.¹³

Are bought followers against the rule?

Selling, distributing, buying or procuring fake indicators of social media influence is a violation under § 465.8, where the party knew or should have known they were fake and they are used to misrepresent influence commercially.⁹

Does any of this apply outside the United States?

The FTC acts under US consumer protection law, so a seller or site outside it is harder to reach. Looking for the disclosure is useful regardless of where the page is hosted.

Does a seller have to show negative reviews?

Nothing in § 465.7 requires a seller to display reviews at all. The violation arises where it shows a filtered set and misrepresents that set as most or all of those submitted.⁸

Should I ignore rankings completely?

Rankings can be a reasonable starting point for finding out which sellers exist. Treat it as a list of names to check, and do the checking on the lot-level paperwork.

What single check is worth the most?

Matching a certificate of analysis to the lot number on the vial in your hand. It is the one document tied to the specific material you were sent, and no ranking substitutes for it.

Sources

Code of Federal Regulations, Title 16, Part 465, Trade Regulation Rule on the Use of Consumer Reviews and Testimonials, as codified. Read at source via the annual CFR volume. https://www.govinfo.gov/content/pkg/CFR-2025-title16-vol1/xml/CFR-2025-title16-vol1-part465.xml ↩1 ↩2 ↩3
Federal Trade Commission, "Trade Regulation Rule on the Use of Consumer Reviews and Testimonials," final rule, published August 22, 2024, document 2024-18519, effective October 21, 2024. Read at source. https://www.federalregister.gov/documents/2024/08/22/2024-18519/trade-regulation-rule-on-the-use-of-consumer-reviews-and-testimonials ↩1 ↩2 ↩3 ↩4
16 CFR 465.2, fake or false consumer reviews, consumer testimonials, or celebrity testimonials, including the generalized-solicitation and review-hosting exclusions at 465.2(d). Read at source. ↩1 ↩2 ↩3 ↩4 ↩5 ↩6
16 CFR 465.3, reserved in the codified rule. Read at source. ↩1 ↩2
16 CFR 465.4, buying positive or negative consumer reviews. Read at source. ↩1 ↩2 ↩3
16 CFR 465.5, insider consumer reviews and consumer testimonials. Read at source. ↩1 ↩2 ↩3 ↩4 ↩5
16 CFR 465.6, company-controlled review websites or entities. Read at source. ↩1 ↩2
16 CFR 465.7, review suppression. Read at source. ↩1 ↩2 ↩3 ↩4 ↩5 ↩6
16 CFR 465.8, misuse of fake indicators of social media influence. Read at source. ↩1 ↩2 ↩3
16 CFR 465.1, definitions. Read at source. ↩1 ↩2 ↩3 ↩4
16 CFR 255.0(b), Guides Concerning the Use of Endorsements and Testimonials in Advertising, definition of an endorsement. Read at source via the annual CFR volume. https://www.govinfo.gov/content/pkg/CFR-2025-title16-vol1/xml/CFR-2025-title16-vol1-part255.xml ↩1
16 CFR 255.5(a), disclosure of material connections. Read at source. ↩1 ↩2
16 CFR 255.1(d) and (e), liability of advertisers and endorsers. Read at source. ↩1 ↩2
Federal Trade Commission, "Rytr LLC; Analysis of Proposed Consent Order To Aid Public Comment," published October 3, 2024, document 2024-22767. Read at source. https://www.federalregister.gov/documents/2024/10/03/2024-22767/rytr-llc-analysis-of-proposed-consent-order-to-aid-public-comment ↩1 ↩2 ↩3 ↩4 ↩5

Can You Trust Peptide Vendor Reviews? What the FTC Rule Requires