Dietary supplement marketing is governed by a distinction most marketers have never had to think about. A claim that a product supports a normal bodily function is permitted with substantiation and a disclaimer; a claim that it treats, prevents or cures a condition makes the product an unapproved drug in the regulator's eyes. Everything about the creative, the landing pages, the affiliates and the advertising platforms follows from which side of that line you are on.
Know the line and write to the permitted side of it
Supporting normal function is one thing; treating, preventing or curing a named condition is another. The second is not a stronger version of the first, it is a different legal category with different consequences. Every headline, testimonial, comparison and before-and-after has to be read against that line by somebody who knows it, before publication rather than after a platform disapproval.
Substantiation has to exist before the claim
Competent and reliable scientific evidence for the claim as it is worded, on file, is the requirement, and a study on a different dose, a different population or a different ingredient does not support it. The practical discipline is a claims document listing each claim, its wording and the evidence behind it, maintained by the company and given to the agency as the boundary within which it may write.
Testimonials and influencers carry your liability
What a customer or a paid creator says about the product is treated as your claim, and disclosure of the relationship is required. That means briefing creators on what may and may not be said, checking what they actually published, and having a process to take down anything that crosses the line. Agencies that recruit creators without a claims brief are creating exposure at scale.
The advertising platforms have their own rules, stricter in places
Supplement advertising is restricted on the major platforms, some ingredients are prohibited outright, and accounts are suspended rather than warned. That makes compliance an operational risk as well as a legal one, and it makes a channel plan that assumes access to every platform unrealistic until somebody has checked each one's current policy for your specific products.
Subscriptions have their own disclosure obligations
Automatically renewing supplement subscriptions and free-trial-to-subscription offers are among the most scrutinised structures in consumer protection, with requirements about clear disclosure before purchase, express consent and simple cancellation. If the business model is a subscription, that flow needs reviewing as carefully as any claim, because it is where the enforcement attention has been.
Questions people ask about supplement marketing
What can a supplement legally claim?
That it supports a normal bodily function, with substantiation and the required disclaimer. Claiming it treats, prevents or cures a condition puts it in a different legal category as an unapproved drug.
What counts as substantiation?
Competent and reliable scientific evidence for the claim as worded, on file before publication. A study on a different dose, population or ingredient does not support the claim you actually made.
Are we responsible for what an influencer says?
In practice yes, and the relationship must be disclosed. Brief creators on the claims boundary, check what they published, and have a process to take down anything that crosses it.
Why do supplement ad accounts get suspended?
Because the platforms restrict this category, prohibit some ingredients outright and suspend rather than warn. Check each platform's current policy for your specific products before building a channel plan around it.