"Supports" vs. "Treats": The One Word That Changes What a Supplement Label Is Allowed to Say

What's the difference between a "structure/function" claim and a disease claim on a supplement label?

A structure/function claim says an ingredient plays a role in a normal body function — the word "supports" is doing real legal work there. A disease claim says a product diagnoses, treats, cures, or prevents a disease, and under U.S. law, only an approved drug can say that. The U.S. Food and Drug Administration (FDA) doesn't pre-approve structure/function claims before a supplement reaches a shelf, but the maker must have evidence for the claim, notify the FDA within 30 days of first selling the product with it, and print a specific disclaimer next to it (FDA — Structure/Function Claims).

Three kinds of claims, one supplement label

The FDA groups food and supplement label claims into three categories, and each one plays by different rules (FDA — Label Claims for Conventional Foods and Dietary Supplements):

• Health claims describe a relationship between an ingredient and a reduced risk of a disease. These need FDA review before use.
• Nutrient content claims describe the amount of a nutrient in a product — words like "high," "low," or "more." These may only use terms the FDA has defined by regulation, and must meet each term's criteria.
• Structure/function claims describe a role an ingredient plays in a normal body function, without mentioning a disease. The FDA's own examples: "calcium builds strong bones," "fiber maintains bowel regularity," "antioxidants maintain cell integrity."

A "supports," "helps maintain," or "promotes" sentence on a supplement label is almost always the third category — the only one a maker can use without asking the FDA's permission first. That freedom comes with a boundary, and the boundary is the disease word.

Why "supports" and "treats" land in different legal categories

A structure/function claim may not "explicitly or implicitly link the claimed effect... to a disease or state of health leading to a disease," per the FDA's own description of the rule. "Supports healthy joints" describes a role in a body system. "Treats arthritis" names a condition and promises a result against it — crossing into territory reserved for drugs, which must go through FDA drug review before they can say it.

This isn't a marketing choice dressed up as a legal one; it's the opposite. The legal category decides which words are available at all, and the marketing has to work within them. A company that wants to say "treats" has to become a drug company first — different pathway, different evidence standard, different product.

The disclaimer you see at the bottom of every page like this one

If a supplement label carries a structure/function claim, federal rule 21 CFR 101.93 requires a specific disclaimer beside it, in boldface type: that the FDA has not evaluated the statement, and that the product is "not intended to diagnose, treat, cure, or prevent any disease." This isn't a liability disclaimer — it's a factual statement about what review did, and didn't, happen before the claim reached you. No trial was submitted to the FDA for approval, and no agency checked the claim's accuracy before the product shipped. The company attests to having evidence; the FDA's role is oversight after the fact, not pre-clearance.

How this relates to RENEW — and how it doesn't

Every health-related sentence in RENEW's own marketing — "supports a calmer, steadier mood," "supports normal immune function," and similar lines — is written to stay inside the structure/function category on purpose. We don't say "treats," "cures," or "prevents," and we carry the same FDA disclaimer this article does, because the rule applies to us exactly the way it applies to every other supplement on a shelf.

What this rule does not do is tell you how strong the evidence behind any specific "supports" claim is. A structure/function claim can be written about an ingredient with decades of research behind it, or about one with a single small study — the legal category is the same either way. The word "supports" tells you what kind of claim you're reading. It doesn't tell you how much proof stands behind it. For an example of reading one specific ingredient's claim against its actual research, see our guide to saffron's research record for older adults, which walks through exactly that kind of claim-by-claim check. Our FAQ page covers the common questions people ask about how RENEW itself is labeled and worded.

The Two-Minute Label Check: reading "supports" language for yourself

Use this on our label, or on any supplement label you're holding:

1. Find the verb. Does the sentence say "supports," "maintains," "helps," or "promotes" — or does it say "treats," "cures," "prevents," or "reverses"? The verb alone tells you which legal category you're in.
2. Listen for a disease word. Does the sentence name a specific condition — arthritis, diabetes, high blood pressure — right next to the ingredient? Pairing a structure/function verb with a disease name is exactly what the rule forbids, so a label doing that has either made an error or stepped outside the category it's claiming.
3. Look for the boldface disclaimer. Its presence means the company is using the structure/function category and following the required notice. Its absence next to a claim is a real gap worth noticing.
4. Notice what isn't promised. A compliant structure/function claim never promises a speed, an amount, or a guaranteed result. If a label implies "you'll feel it in days" or "see real change fast," that promise isn't coming from the claim category itself.

Questions to bring to your doctor or pharmacist

• Does a "supports" claim on a product I'm taking have any bearing on a diagnosed condition I already have?
• Should I mention every supplement I take, even ones with claims that sound unrelated to my prescriptions?
• Is there a meaningful difference, for my situation, between a product regulated as a supplement and one regulated as an over-the-counter drug?

None of this tells you whether a particular supplement is right for you — it tells you how to read what the label is, and isn't, legally allowed to say. Worth sending to someone who reads labels with you.

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Written by The Novera Team. Last reviewed: 2026-09-11.

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.