Report 045 · Supplements
A parent searches that question, lands on a product page, and sees "clinically proven" sitting next to a link marked Clinical Study. In 2026 the Federal Trade Commission opened one of those studies and wrote down, item by item, why it did not count. That list is the most useful thing published about supplements all year.
I formulate and sell mushroom supplements, so treat what follows as a man grading his own industry. That is exactly why I want this one on the record. The rules that just cost another supplement company $750,000 are the same rules I have to build my own labels under, and the document the FTC produced along the way is something I would hand to any shopper who has ever wondered what a "clinical study" link on a product page is actually worth.
TruHeight, legally Vanilla Chip LLC, is a Nevada company that has sold supplements marketed as boosting height growth in children and teenagers since at least 2020. The line is broad: growth capsules and gummies at $45 a bottle, sleep gummies, protein shakes, kids' bone and brain gummies, an appetite booster, a toddler formula. There is a "Max Height Kit" bundle at $120. By the FTC's account the company has generated millions of dollars in revenue.
The advertising ran on Meta, on search ads, in email, and on the company's own site. Two lines from it appear in the FTC's complaint verbatim: "Help your child grow taller! Pure Ingredients, Real Results," and the one that matters most, "The Only Supplement Clinically Proven to Help Height Growth."
That second claim is not vague puffery. Saying clinical tests prove a product works is a specific factual representation, and under the FTC Act you have to be holding the evidence before you say it. So the agency asked what the evidence was.
There was one. This is the part people get wrong about these cases: the company was not caught with nothing. It had a study, and a page on its website devoted to it. Here is paragraph 11 of the complaint, which is the whole report in miniature:
To substantiate their claims that TruHeight Products increase the height of, and height growth in, children and teenagers, Respondents primarily rely on a single, company-sponsored study. The study relied upon by Respondents, which measured height growth of 32 participants over a six-month period, has substantial flaws. Among other things, the study is of insufficient size and duration, lacked proper randomization, failed to control for participants' sleep and nutritional intake, and only evaluated a single TruHeight product.
Four flaws, and each one is a lesson you can carry to any product page in any category.
Insufficient size and duration. Thirty-two participants, six months. Children grow on their own, which makes this the trickiest possible thing to measure. Over half a year every kid in that study was going to get taller no matter what was in the capsule, so the only interesting number was ever the difference between groups, and a group that small over a window that short cannot resolve a difference from ordinary variation between children. You are not measuring a product. You are mostly measuring childhood.
Lacked proper randomization. Randomization is not paperwork, it is the entire mechanism that makes a comparison mean anything. Assign kids to groups properly at random and the two groups differ only by chance, so whatever else you find is attributable to the treatment. Let anything else steer who ends up in which group, including parents who opt in because they are already invested, and you have built a machine that produces a favorable difference whether or not the product does anything.
Failed to control for sleep and nutritional intake. Notice that the agency named these two specifically rather than gesturing at "confounders." They are the obvious rival explanations for a child growing over six months, and a study that lets them float freely cannot separate the supplement's contribution from them. Worth noting the company also sold sleep gummies, which makes the uncontrolled variable and the product line uncomfortably close relatives.
Only evaluated a single TruHeight product. This is the flaw I would most like shoppers to internalize, because it is invisible from the outside. One product was studied. The claim was worn by the catalog. Claim transfer like this is common and nearly undetectable from a product page, since the badge sits on every item and the study behind it sits on one.
Company-sponsored is not by itself a disqualifier, incidentally, and I want to be fair about that. Somebody has to pay for the research and it is usually the company that makes the thing. Sponsorship is a reason the design has to be tighter than average, not looser. This design was looser.
The evidence problem came with a manufactured-consensus problem, and the complaint's account of it is worth reading closely.
Until at least November 2024 the TruHeight website carried several thousand 5-star reviews presented as customer reviews. Numerous ones were written by the company's own employees, and the complaint states plainly that those employees' reviews "were not based on employees' use of TruHeight Products." Three of the fakes are quoted in the complaint, including a mother reporting that her 13-year-old "she's an inch taller," and one describing a doctor confirming improved bone health after roughly three inches in four months.
Alongside the fakes ran an incentive program: a "Free Next Order" scheme in 2021 and 2022 giving Amazon buyers a free product for a 5-star review plus a screenshot proving it, and from late 2023 a 10 percent discount for customers willing to "take a moment to leave a 5-star review and upload at least one picture." One of the co-CEOs personally solicited two Amazon reviews in April 2023 and offered reimbursement once they were posted.
And then the bots. The company bought approximately 176 Facebook and Instagram profiles that posed as real users and posted software-generated comments on its own pages.
Take the three together and the shape is clear. The study was the evidence a regulator would ask for. The reviews were the evidence a parent would look for. Both were engineered, which is why the FTC charged violations of the FTC Act and its Reviews and Testimonials Rule.
The FTC brought the case in April 2026 and announced the finalized order on 15 July 2026, on a 2-0 Commission vote. The order imposes a $4 million judgment on the company and its two co-founders, partially suspended after payment of $750,000 based on inability to pay the full amount.
The forward-looking terms matter more than the money. The respondents are barred from making false or unsubstantiated height and growth claims, and barred from claiming any health benefit, performance, efficacy, or safety property for a covered product unless the claim is not misleading and is supported by competent and reliable scientific evidence. They may not misrepresent that a reviewer exists, that a reviewer used the product, or what a reviewer experienced. They may not buy reviews conditioned on sentiment. Each future violation of an order like that can carry a civil penalty of up to $53,088.
"Competent and reliable scientific evidence" is the phrase to remember. It is the actual legal standard hiding under the words "clinically proven," and I wrote a whole report on where that line sits and who has crossed it. As the Bureau of Consumer Protection's director put it here: "The law is clear: you must have competent and reliable scientific evidence to support health claims about your products or services."
Turn the FTC's teardown around and you get a checklist that works on any supplement, in any category, in about ninety seconds:
Was it randomized, with a control group? If the page does not say, assume not. Without both, whatever happened may just be time passing.
How many people, for how long? Small and short is not fraud, it is a pilot. Pilots are fine. Pilots do not prove things.
What was held constant? Every serious trial names what it controlled for. If the obvious rival explanation for the result is not addressed anywhere, it is the result.
Was this product studied, at this dose? Not the ingredient in general, not a cousin product. This one.
Where can I read it? A published paper with a DOI, or a registered trial with a number, invites checking. A PDF or a summary page that exists only on the seller's website does not.
None of that requires a science degree. It requires treating a "Clinical Study" link as a document to be opened rather than a badge to be counted, which is precisely what the FTC did here, and it took the agency one paragraph.
The instinct after a case like this is to conclude the whole category is a scam. I do not think that is the right read, and I would say so even if I did not sell supplements. The useful read is narrower and more durable: the presence of a study is not evidence. The design of the study is the evidence. A company with a bad study and a company with no study look identical from the outside, and the second one is at least honest about it.
That is the same reflex behind reading a lion's mane trial that was built properly and still returned a null on its primary outcomes, and behind noticing when a decent study gets reported past its own conclusions. Good design that produces a boring answer is worth more than bad design that produces the answer somebody paid for. Height is just an unusually clean case, because it is the one outcome a parent can measure against a doorframe, and the company still had to invent the customers who said it worked.
Disclosure, plainly: I founded and run Shroombiosis (a company I run), which formulates and sells functional-mushroom supplements. That is a direct commercial stake in the industry this report is about, and the substantiation standard described here governs my labels exactly as it governs anyone else's. Nothing here is sponsored and no link earns a commission; here's the full policy. A recommendation with no stake at all: for performance nutrition, Die Tryin Co. is a fellow combat-veteran-owned brand I'm glad to point people to. I don't own it and earn nothing from the link.
Not medical advice. This is educational analysis, not a recommendation — a study is not a prescription. Talk to a qualified clinician before acting on anything you read here. Full disclaimer →
U.S. Army combat veteran (Counter-IED / Electronic Warfare), peer-reviewed researcher in microwave spectroscopy, and founder & CEO of Shroombiosis. Consults on laboratory operations, AI, and supplement formulation.