Meta ads for a Shopify supplement store

Supplements are one of the few categories where the advertising rules and the unit economics both differ from everything else — and they pull in opposite directions. The rules make it harder to say what your product does; the economics give you more room than almost any other seller.

What you cannot say, and what to say instead

Supplements are not formally a Special Ad Category, but they carry their own restrictions and they attract stricter automated review than most categories. Three things get ads rejected here more than anywhere else.

Implying you know something about the reader. Meta prohibits copy that asserts or implies a personal attribute — a health condition above all. The trap is the second person:

Gets flagged	Passes
“Feeling tired all the time?”	“Support for everyday energy”
“Struggling to sleep?”	“A simpler evening routine”
“Over 50 and losing muscle?”	“Formulated for muscle maintenance after 50”

The rewrite is mechanical: from “you are X” to “this is for X”. The message survives, the violation does not.

Claims that cannot be substantiated. “Cures”, “clinically proven to treat”, “guaranteed results”. Health claims get the strictest scrutiny of any category. “Clinically tested” instead of “clinically proven to cure” usually costs nothing and passes.

Before-and-after imagery. Body transformations, split-screen comparisons, and close-ups that imply a flaw to be corrected are restricted. Show the product in a routine, or a whole person, not the problem area.

Check your specific product before you build the campaign: some ingredients are age-gated or outright prohibited in particular markets, and that changes the targeting you are allowed to use — which changes the campaign structure, so it is cheaper to know first.

Your break-even is lower than almost anyone’s

Supplement margins typically run 70–85%. That puts your break-even ROAS between 1.2 and 1.4, against 2.5 for a store at 40%.

This matters more than it sounds. It means campaigns that would be catastrophic for an apparel store are comfortably profitable for you, and it means the generic “aim for 3x” advice is wildly wrong in your direction — you are leaving volume on the table if you hold yourself to it.

Work out your own number before you judge a single campaign.

The first order is a subscription in disguise

This is the structural difference. A supplement buyer who likes the product buys it again, roughly on the cadence of the bottle running out. The value of the customer is not the first order; it is the first order plus however many follow.

That changes the CPA question. If your contribution per order is $18 and your average customer buys 3.4 times, your real ceiling is not $18 — it is closer to $60, minus whatever it costs to keep them.

Two practical consequences:

You can outbid single-purchase competitors for the same audience, because you are paying for a longer relationship than they are.

Measure your repeat rate before you scale. If you do not know it, you do not know your ceiling, and the safe assumption is the first order only — which will keep you smaller than you need to be.

Do not let Meta optimise for the repeat purchase, though. It optimises for what it can see within the attribution window, and the second order arrives weeks after it closes. Optimise for the first purchase and manage the rest with email.

Creative that works when you cannot make claims

With the strongest claims off the table, the angles that carry supplement advertising are the boring ones, and they work:

• Formulation transparency. Dose per serving, what is not in it, where it is made.
• Routine and occasion. When in the day it is taken, and alongside what.
• Third-party evidence. Certifications, testing, the specific number of reviews.
• The objection. Taste, pill size, subscription cancellation. Whatever people actually hesitate over.

The last one is consistently underused and consistently converts, because it answers the question already in the reader’s head.