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Structure Function Claims Explained in Plain Language
A structure function claim describes how a nutrient affects the normal structure or function of the body, such as calcium and bones. It cannot say a product can treat, cure or prevent a disease. The FDA does not pre-approve it, the maker needs evidence, and the label must carry a disclaimer. The maker must notify the FDA within 30 days.
Written by the VapoCept label deskUpdated · 4 min read
The rule01
What is a structure function claim?
It is a statement about what a nutrient does in the normal body, such as "calcium builds strong bones".
- The FDA does not approve the statement before sale.
- The maker must hold evidence, and the claim must not mislead.
- The FDA must be told within 30 days of marketing.
The label must also say the statement has not been evaluated by the FDA and that the product is not meant to diagnose, treat, cure or prevent any disease (FDA, Structure/function claims).
The line02
How is it different from a disease claim?
A disease claim names an illness or a decline. Only approved drugs may make one.
A warning letter from the FDA and the FTC shows how this works. It treated a "nootropics" seller's pages as drug claims because they tied the products to dementia, Alzheimer's and stroke. The word nootropic was not the trigger; the disease wording was (FDA/FTC warning letter to Pure Nootropics (Feb 2019)).
| Wording | Type | Allowed on a supplement? |
|---|---|---|
| Calcium builds strong bones | Structure function | Yes, with disclaimer |
| Helps prevent Alzheimer's disease | Disease claim | No, that makes it a drug |
| Treats memory loss in older adults | Disease-linked claim | No |
The evidence side03
Does a structure function claim mean the product was tested?
No. The claim needs substantiation, but the FDA does not check it first.
The FTC says research on one ingredient may not support a claim about a finished product, because dose, form and combination can differ (FTC, Health Products Compliance Guidance).
The VapoCept bottle render prints "Clinical Memory Restoration" and "Focus | Clarity | Energy". Those are the seller's words, and no source we found shows them. Whether they fit the rules is not ours to rule on. Studies of the listed amino acids use grams a day and look at blood vessels and exercise. See the research page and the claims versus evidence page.
VapoCept: 30 capsules, 30-day bottleOne capsule a day · 2, 3 or 6 bottles · $49 to $79 a bottle per the brand information, confirm at checkout
See packsBehind the wording04
What would a claim like that have to rest on?
Evidence about the finished product at its own dose. The map shows the proposed routes behind each panel line instead.
Tap a line to see its proposed pathway, studied mostly in exercise research.
Pathways
200 mg + 200 mg + 100 mg + 100 mg · as listed in the brand's panel
Four of the seven lines (two arginine, two citrulline) feed the proposed nitric oxide route: arginine, or citrulline turned into arginine, is the raw material for nitric oxide, which relaxes blood vessel walls. Studies use grams a day (arginine 2,000 to 24,000 mg, citrulline 6,000 to 8,000 mg), mostly for blood pressure and exercise. The listed amounts are 100 to 200 mg.
Illustration of a proposed mechanism, studied mostly in exercise research. It is not a measured effect on mind, and it is not what happens in your body. Sources: (MSK, Arginine (About Herbs)) (Trexler 2019, Citrulline and strength/power meta-analysis) (ISSN position stand, Beta-alanine) (NIH ODS, Niacin (consumer))
If VapoCept suits you after talking to a doctor or pharmacist, the packs are below.
90-day supply
3 bottles: 90 days
$69a bottle · $207 for 3 · per the brand information
Ships from the U.S. · 60-day guarantee per the sales page
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180-day supply
6 bottles: 180 days
$49a bottle · $294 for 6 · per the brand information
Ships from the U.S. · 60-day guarantee per the sales page
Order 6 bottlesPrices follow the brand information; confirm the live price at checkout. A 2-bottle pack is also offered. Check your medicines with your doctor or pharmacist before you order.
FAQ05
VapoCept questions people ask
Who approves a structure function claim?
No one approves it in advance. The maker must hold evidence, tell the FDA within 30 days of marketing, and print the disclaimer. The FDA can act afterward if the claim is false, misleading or really a disease claim.
Is memory a structure function or a disease claim?
It depends on the wording. Describing normal memory can be a structure function claim. Wording about memory loss or decline can read as a disease claim, which would make the product a drug in the FDA's eyes.
What does the FDA disclaimer on a supplement mean?
It says the FDA has not evaluated the statement and the product is not intended to diagnose, treat, cure or prevent any disease. It marks the claim as unreviewed, not as false. The VapoCept bottle's own wording was not supplied.
Sources (7)
- ArginineMemorial Sloan Kettering Cancer Center (About Herbs), 2022
- Acute Effects of Citrulline Supplementation on High-Intensity Strength and Power Performance: A Systematic Review and Meta-AnalysisTrexler ET, Persky AM, Ryan ED, Schwartz TA, Stoner L, Smith-Ryan AE. Sports Medicine 2019;49(5):707-718 (abstract via Duke Scholars), 2019
- International Society of Sports Nutrition position stand: beta-alanineTrexler ET, Smith-Ryan AE, Stout JR, et al. Journal of the International Society of Sports Nutrition 2015;12 (abstract via Northumbria University repository), 2015
- Niacin: Fact Sheet for ConsumersNIH Office of Dietary Supplements, 2021
- Structure/Function ClaimsU.S. Food and Drug Administration, 2024
- Health Products Compliance GuidanceFederal Trade Commission, 2022
- Warning letter to Pure Nootropics, LLC (WL 565425), joint FDA and FTCU.S. Food and Drug Administration and Federal Trade Commission, 2019
Who wrote this06
Written and reviewed by
Pages built from the brand information, the brand's images and linked NIH, FDA, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site of Vapocepts, the U.S. stocking partner for VapoCept. It is not the manufacturer and it is not the sales page. We earn money when you buy through our order links.
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