How to Write a Supplement Page Without Health Claims
Founders think compliance is what's capping their conversion rate. It almost never is. The vague copy they wrote to stay safe is doing that, and the rules are not the reason it's vague.
The best supplement page I've worked on got cut in half by a lawyer.
Eleven sentences deleted. Every bold promise, gone. The founder was sure the page was dead. It converted better after.
Here's how to write a product page without health claims, in the order the work happens: learn the two sentences you're allowed to write, find the words that quietly turn legal copy into a drug claim, then replace the claim with the three things that were always doing the selling.
Because compliance gets blamed for a flat conversion rate, and compliance is almost never the cause. A claim like "boosts energy and supports immune health" was never persuading anybody. Your buyer has read that sentence a thousand times, on a thousand labels, and learned to skip it.
A claim asks the buyer to take your word for it. A mechanism lets them check your work. One of those survives a skeptical reader.
What can you actually say?
Two buckets, and the line between them is the whole game.
Structure/function claims are allowed. These describe how an ingredient affects the normal structure or function of the body. "Supports a healthy immune system." "Promotes joint health." You can also reference classical nutrient deficiency diseases, like vitamin C and scurvy, and you can speak to general well-being. Three obligations come attached: hold scientific substantiation, carry the disclaimer, and notify the FDA within 30 days of first marketing the claim.
Disease claims are not allowed unless you're selling a drug. Saying your product treats, prevents, cures or mitigates a condition puts you in a category you haven't registered for.
The disclaimer has to appear, and it reads exactly like this:
This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Most founders paste that in 8px grey at the bottom of the page and treat it as a tombstone. Put it in readable type near the claim instead. A buyer who sees you quoting the rule at them reads it as confidence, not weakness, and the skeptical buyer you're writing for is exactly the one who notices.
Which words turn legal copy into a drug claim?
This is where pages get written into trouble by accident, usually by a copywriter who meant well.
Naming the disease is the obvious trap. The less obvious one is naming the disease process. "Helps lower blood pressure" is a disease claim even though it sounds like gentle wellness language. Same story for copy touching cholesterol, blood sugar management, mood disorders and inflammation-related conditions. You didn't say the condition's name, and you still crossed the line, because you described treating it.
Read your page hunting for the verb. Supports, promotes and maintains live on the safe side. Reduces, lowers, treats, fixes, heals and prevents walk you into drug territory.
One more thing worth knowing: the FDA's structure/function rules are not the whole test. A label that satisfies the FDA can still trigger FTC action if the same claim in your advertising isn't adequately substantiated. The FTC's health products guidance generally expects competent and reliable scientific evidence, and for a health benefit claim that usually means at least one randomized, placebo-controlled clinical trial. Not a study on the ingredient someone found on PubMed. Evidence for the claim you're making.
And a disclosure that contradicts the main message of your copy does nothing. You can't promise a cure in the headline and take it back in a footnote.
Can you still use your reviews?
Carefully, and this surprises people.
A testimonial being someone's honest experience is not enough. You need substantiation for the claim the testimonial implies, because the implied message is that a buyer can expect the same thing. If a review describes an outcome your product isn't substantiated to cause, you can't run that review, even though the customer wrote it and means it.
Testimonials suggesting typical results have to disclose what typical results are. And anecdotal evidence from individual customers is generally insufficient on its own to substantiate a claim.
So sort your reviews by what they talk about, not by star rating. The five-star review saying "my knee pain vanished" is a liability. The five-star review saying "the unflavored one actually dissolves in cold water and doesn't taste like dirt" is gold: specific, checkable, zero regulatory exposure, and it answers a real hesitation. Most supplement brands are sitting on hundreds of those and featuring the wrong ones.
Do your photos count?
Yes, and this one catches almost everybody.
Images of people in visible pain, medical settings, health statistics and before-and-after graphics can convert a permitted structure/function claim into a drug claim by themselves. The stock photo of someone clutching their lower back is making a claim your copy was careful not to make.
Regulators read the page. Not the sentences. The page.
Which is fine, because the photos that convert were never the medical ones. The jar in a hand, for scale. The scoop, leveled, next to a glass so the dose looks real. The powder actually dissolved, not sitting in a clump. That's the photography that answers what a buyer is worried about, and none of it implies you treat anything.
So what replaces the claim?
Three things, and they were always the part doing the work.
The mechanism. Not what it does, how it works. Which ingredient, at what dose, doing what inside the normal function of the body. A buyer comparing two magnesium products can't verify "supports restful sleep" on either page. They can absolutely verify that one page says magnesium glycinate at 400mg and the other says "magnesium blend" and won't tell them the form. Publishing the full ingredient list stops being a compliance chore and starts being your proof.
The experience. What using it is like. Taste, texture, how it mixes, how big the capsule is, how long the bottle lasts, whether it stains the shaker. Nobody regulates this and nobody writes it. It's the most underused real estate on a supplement page, and it's what review sections fill up with when the page stays silent.
The specificity. Third-party tested, and by whom. Dose per serving against the dose in the study. Where it's manufactured. What's not in it. Facts carry their own credibility, and they do it without asking the reader to believe a promise.
Compliance didn't take your best sales argument away. It took the lazy one away, and made you go find the one that actually works.
What this is worth on the same traffic
Run the math on a supplement store like this one. Conversion rate 1.2%, average order value $68. That means revenue per visitor is $0.82. On 10,000 visitors, that's $8,200.
Now strip the claims nobody believed, publish the dose and the form, write the texture and the taste, and re-sort the reviews to lead with the checkable ones. Conversion rate 2.9%, average order value $94. Revenue per visitor $2.73. On the same 10,000 visitors, that's $27,300.
That's $19,100 more from traffic you already paid for.
Hypothetical store, so here's a real one from a different category. One of our client's products, a set of copper bamboo sheets, went from a conversion rate of 1.0% and an average order value of $125, which is revenue per visitor of $1.25, to a conversion rate of 4.3% and an average order value of $221. That's revenue per visitor of $9.50. On 10,000 clicks, that's $95,000 instead of $12,500. You can see the full case study numbers on our results page. Real client numbers, not typical results, and not a promise of what your store will do.
No health claims involved in bedding. Same lesson anyway: the page started answering the question the buyer was actually asking.
What to do next
Print your best-selling product page and take two passes with a pen.
First pass, circle every sentence that promises an outcome. Second pass, write in the margin what you'd need to say instead if that sentence were illegal tomorrow. The margin notes are your new page. That's the exercise behind every collagen supplement page and greens powder page we've rebuilt, and the margin always holds better copy than the page did.
None of this is legal advice. Have your own counsel review your claims before they go live.
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Get your free profit audit and we'll show you exactly where your supplement page is losing buyers, then rebuild a high-converting product sales page in less than 15 minutes.
P.S. The claim you're fighting to keep is the one your buyer already discounted. The dose, the form and the third-party test are the ones they'll screenshot and send to a friend.
Frequently asked questions
What can I legally say on a supplement product page?
You can make structure/function claims, which describe how an ingredient affects the normal structure or function of the body. "Supports a healthy immune system" and "promotes joint health" are the classic permitted forms. You have to hold scientific substantiation for the claim, carry the FDA disclaimer, and notify the FDA within 30 days of first marketing it.
What turns a structure/function claim into an illegal drug claim?
Naming a disease or a disease process, even gently. "Helps lower blood pressure" is a disease claim, and so are references to cholesterol, blood sugar management, mood disorders and inflammation-related conditions. The test is whether you're describing normal body function or implying you treat a condition.
Is the FDA disclaimer enough to protect me?
No. A label that satisfies the FDA's structure/function rules can still draw FTC enforcement if the same claim in your advertising lacks adequate substantiation. The two agencies apply different standards to the same sentence, and the FTC's standard is generally the harder one to meet.
Can I use customer testimonials about health results?
Only if you can substantiate the claim the testimonial implies. An honest review is not sufficient on its own. If a testimonial describes an outcome your product isn't substantiated to cause, you can't run it even when it's true for that customer, and testimonials implying typical results have to disclose what typical results actually are.
Do product photos count as claims?
Yes. Images of people in visible pain, medical settings, health statistics and before-and-after graphics can convert a permitted structure/function claim into a drug claim on their own. The picture carries a message, and regulators read the whole page, not only the sentences.