Can supplement and health brands do GEO without breaking FDA and FTC rules?
Yes. Generative engine optimization does not change the rules: anything you publish is still marketing, so FDA claim rules and the FTC's substantiation standard apply to it. The safe approach is to answer buyer questions with evidence-led content, keep product claims to supportable structure/function language, and cite the research instead of overstating it.
Does content written for AI count as advertising?
Treat it as if it does. A guide on your own site that recommends your product is marketing, whether a person or a model reads it. If an AI assistant quotes your page, it is quoting your claim.
This cuts both ways. A clearly sourced, carefully worded page is exactly what an AI system prefers to cite. Hype rarely survives being summarized next to a medical source.
What can a supplement say?
Dietary supplements may make structure/function claims, which describe how an ingredient affects the normal structure or function of the body, such as supporting digestion. FDA requires a disclaimer that the claim has not been evaluated by FDA when one appears on a supplement label.
Supplements may not claim to diagnose, treat, cure or prevent a disease, explicitly or by implication, unless the claim has been authorized under FDA's health claim or drug rules. FDA has acknowledged the line between a structure/function claim and a disease claim is not always bright, which is why wording needs review.
What evidence does the FTC expect?
The FTC's Health Products Compliance Guidance, issued in December 2022, says health-related claims need competent and reliable scientific evidence. As a general matter, the FTC expects that evidence to be randomized, controlled human clinical trials. Animal studies, test-tube studies and anecdotes generally do not meet the standard on their own.
The guidance applies to all health-related products, not only supplements, and covers implied claims as well as stated ones.
How do you write a citable page inside those limits?
Answer the buyer's actual question first, in plain language. Describe what the research found, at what dose, in which population, and link the study. Separate ingredient research from product claims. State what the evidence does not show.
That structure is what earns citations, and it is also what keeps a page defensible. In our own supplement work, AI-feature impressions began during the evidence-first rebuild in mid-2026.
Common follow-up questions
Is a blog post held to the same standard as a label?
FDA label rules and FTC advertising rules overlap. A blog post promoting a product is likely to be treated as advertising by the FTC, so it needs the same evidence behind any health claim. Have counsel review wording for your specific products.
Can I cite a study on an ingredient to promote my product?
Only with care. The FTC looks at whether the research matches your product, dose and claim. A study on a different dose or form does not substantiate your product's benefit.
Does this apply to telehealth and clinics?
The FTC guidance states that its advertising law applies to all products and claims. Clinics and telehealth providers also face state rules on advertising and fee arrangements, which vary by state.
Sources
- FDA, Structure/Function Claims. https://www.fda.gov/food/nutrition-food-labeling-and-critical-foods/structurefunction-claims
- FDA, Small Entity Compliance Guide on Structure/Function Claims. https://www.fda.gov/food/guidanceregulation/guidancedocumentsregulatoryinformation/ucm103340.htm
- FTC, Health Products Compliance Guidance (PDF). https://ftc.gov/system/files/ftc_gov/pdf/Health-Products-Compliance-Guidance.pdf
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