Anti-Aging Products: Regulation, Warning Letters and Alerts

The core rule

In the United States, what a product may say depends on what it is. The same promise can be allowed on one kind of product and illegal on another. This page covers the US only, using FDA pages we read on 2026-10-22. Laws change and this is not legal advice. We name no vendors.

Evidence labels used here: approved medicine, marketing claim, evidence of harm and insufficient evidence. Where we looked and found nothing usable we write "Proper evidence not found."

Dietary supplements

FDA says that under the Dietary Supplement Health and Education Act (DSHEA), it does not have authority to approve dietary supplements before they are marketed. [1] The firm is responsible for making sure its product is not adulterated or misbranded, and for having substantiation for claims it makes. [1]

Allowed label claims include structure/function claims, which describe an effect on the body's structure or function, such as "calcium builds strong bones." [2] These need a disclaimer: "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." [1] By contrast, FDA says a supplement represented to treat, prevent or cure a specific disease meets the definition of a drug. [1]

So "supports healthy aging" can appear as a structure/function style claim, while "reverses Alzheimer's" cannot. A structure/function claim is not proof the product works; label: marketing claim unless trials show otherwise. See reading supplement labels and how supplements are regulated.

NMN: a regulatory example

FDA has changed its position on nicotinamide mononucleotide (NMN). In a letter dated December 2, 2025, FDA recounted that in 2022 it had said NMN was excluded from the dietary supplement definition, and that on September 29, 2025 it reconsidered and determined NMN is not excluded. [3] This is a narrow legal determination about the definition. It says nothing about whether NMN works or is safe. See NMN human evidence.

Skin creams and "anti-wrinkle" claims

FDA says a product meant to make lines less noticeable simply by moisturizing is a cosmetic. But a product intended, for example, to remove wrinkles or increase the skin's production of collagen is a drug or a medical device. [4] Cosmetics do not require FDA approval before sale, while drugs must have approval for safety and effectiveness. [4] FDA says it is concerned about anti-wrinkle or anti-aging cosmetics making drug claims about effects on skin structure or function. [4] See skin aging and appearance.

Injections and cell-based products

• NAD+ injections. FDA reminded compounders that food-grade NAD+ is unsuitable for sterile injectables because of contamination risk, and reported adverse events consistent with excessive endotoxins. [5] The page is dated 10/30/2024.
• Stem cells, cord blood, exosomes. FDA says it has received reports of blindness, tumor formation and infections, and that the only FDA-approved stem cell products are blood-forming stem cells from cord blood, for blood-system disorders. [6] A May 2025 warning letter to a seller of cord-derived exosome products said they were unapproved, and that a "research and investigational" statement did not change this without an investigational application in effect. [7]

"Research use only" peptides

In an August 2026 warning letter to an online seller, FDA cited a product page describing "Mitochondrial repair, anti-aging, neuroprotection" and said several listed products were unapproved new drugs. [8] FDA also said that despite "for research use only" and "not for human or animal consumption" statements, the evidence showed the products were intended as drugs for human use. [8] See peptide safety. FDA's letters are enforcement positions; they do not say the named compounds are safe or unsafe in themselves, and we did not review the full letter list. Proper evidence not found for a complete count of anti-aging warning letters.

Health fraud

An FDA consumer pamphlet lists "anti-aging scams" and says no treatment has been proven to slow or reverse the aging process, despite claims about pills or treatments that lead to endless youth. [9] FTC guidance adds that health benefit claims generally need competent and reliable scientific evidence, with randomized human trials as the most reliable form. [10]

How to read an anti-aging label

1. Is it a supplement, cosmetic or drug? The category sets what it can claim.
2. Does the claim name a disease? Then it is a drug claim.
3. Is there a human trial of this exact product? Ingredient results do not carry over: see quality testing and certifications.
4. Does it say "research only"? FDA looks at how it is marketed.
5. Report side effects: side effects and reporting.