Supplement brands rarely get disapproved because of what is in the bottle. They get disapproved because of what the page says the bottle does. The ad platforms treat health claims as the risk, and the claim is made in your copy, your product title, your reviews and sometimes your collection names.
This is the single most useful thing to understand about advertising in this category, because it changes who fixes the problem. It is not a feed engineering job. It is an editing job, done by someone who understands which sentences are describing a product and which are describing a medical outcome.
The second useful thing is that the review looks at the whole destination, not just the ad. Your landing page, the pages linked from it, the claims in your customer reviews, and the language in your ingredient descriptions are all part of what is being assessed. Stores clean up the ad, leave the page untouched, and cannot understand why the disapproval returns.
The line between describing and treating
The distinction the policies care about is between describing a product and promising a medical effect. A sentence that says a capsule contains magnesium is a description. A sentence that says it cures cramps is a treatment claim. Most of the risky copy sits somewhere between those two and reads as harmless to the person who wrote it.
Language that names a condition is the highest risk, whether the condition is named directly or through an obvious euphemism. So is language that promises an outcome, particularly with a timeframe attached. So is anything that positions the product as an alternative to medical care, or that implies it prevents illness.
Safer copy stays with what the product is, what is in it, how much, how it is made, how it is taken and who it is not suitable for. That reads as less exciting to a marketing team and considerably more credible to a buyer who is comparing several brands.
If you cannot tell whether a sentence crosses the line, apply a simple test. Would a pharmacist be comfortable saying it about an unregulated product. If not, rewrite it.
A claim problem removes an ad. A prohibited ingredient can remove the account.
Ingredients that stop the account rather than the ad
Some substances are restricted or prohibited outright, and the consequence is different in kind. A claim problem removes an ad. A prohibited substance can put the whole account at risk, and reinstatement is slow and unpleasant.
The practical implication is that a catalogue audit comes before any campaign work. Go through every product and identify the ones that sit in the restricted category, the ones that sit in the prohibited category, and the ones you are not certain about. The uncertain group is the dangerous one, because it is usually left in the feed while somebody means to check.
The cleanest structure we use is a feed that only contains products you are confident about, with everything else excluded until it has been reviewed. This is not the same as removing them from the store. It means the advertising catalogue is a deliberate subset rather than an automatic export of everything you sell.
It also means one risky product cannot take your compliant range offline with it, which is the failure that hurts most.
Where the risky language hides
Stores usually edit the product description, then get disapproved again, because the claim was somewhere else entirely.
Product titles are the most common hiding place, and they are also in the feed, so they are read twice. A title that names a body function or a condition is doing the same job as a claim in the copy.
Collection names and navigation labels are next. A category built around a health outcome is a claim that appears on every page in it.
Customer reviews are the one stores never think of. A review saying a product cleared up a medical condition sits on your page as your content, and the review is being read. This is not a reason to hide reviews. It is a reason to moderate them, and to decide in advance what you will do when a genuine, well-meaning review makes a claim you cannot make yourself.
Then there are blog posts, ingredient glossaries, image text, comparison tables and anything linked from the landing page. The rule we work to is that everything reachable in one click from the ad should survive the same read.
What to build the marketing on instead
The constraint is real and the useful response is to compete on the things you are allowed to say, which happen to be the things buyers in this category increasingly care about.
Sourcing and testing. Where ingredients come from, what testing is done, whether results are published, who does the manufacturing and to what standard. This is factual, checkable and impossible for a weaker competitor to copy.
Form and dose. What is actually in a serving, in what form, at what amount. Buyers in supplements are unusually informed and comparison-minded, and a clear panel does more than an adjective.
Practical use. How and when it is taken, what it tastes like, how long a bottle lasts, whether it needs refrigeration, how it fits with other things people take.
Suitability. Who it is not for, and when to speak to a professional first. Stating this plainly reads as confidence rather than caution.
All of this survives review, all of it converts, and all of it is the same material that gets a page quoted when someone asks an assistant which brand to trust.
The order we work in
For a supplement brand starting or restarting on Google, we work through the same sequence, and none of it starts with campaigns.
First, the catalogue audit, splitting products into confident, restricted and unknown, and excluding everything that is not confident from the advertising feed.
Second, an editorial pass across titles, descriptions, collection names and any page linked from a landing page, removing condition names and outcome promises and replacing them with composition, sourcing and use.
Third, the ordinary Merchant Center work that any store needs, because supplement accounts fail on price mismatches and missing identifiers exactly like everyone else, and it is easy to blame the category for a problem that is generic.
Fourth, verification and any certification the platform requires in your market, since some health-related advertising has an application process attached and it takes time.
Only then, campaigns, starting narrow with the products you are most confident about, so that a mistake affects one campaign rather than the account. In this category the cost of moving slowly is small. The cost of a suspension is a quarter.