Amazon PPC for Supplement Brands

Often, but only if you stop judging the first order on its own. Work out your contribution per bottle first: unit cost, then subtract the category referral fee, the FBA fulfillment fee for your size tier, an allowance for storage and returns, and the 3.5% fuel and logistics surcharge Amazon applied to US fulfillment fees from April 2026. That figure divided by your price is your break-even ACOS on a single sale. Then look at what a customer is worth, since your Subscribe and Save subscriber count and the repeat purchase data in Brand Analytics give you a defensible repeat rate from your own account rather than a category average. A first order taken at single-sale break-even can still be a clear win when repeat behaviour is strong. If your product is genuinely a one-time purchase, none of that applies. Nobody can promise you a given ACOS either way.

Yes, and the constraint shapes the strategy rather than just the wording. Claims about treating, curing or preventing conditions are off the table, and a listing pulled for a claim takes its advertising history with it, which is a far more expensive outcome than a cautious headline. What is left is more useful than most brands assume: format and dosage transparency, third-party testing, sourcing, certifications, capsule count and cost per serving, and who the product is for. Those differentiate honestly and they match how careful buyers actually search. We write ad copy and listing content to stay inside what Amazon and the category allow, but we are not your regulatory counsel, and claims that sit close to the line should be reviewed by someone qualified to sign off on them before they run. That review is cheap next to a suppression that takes a ranking listing offline mid-quarter.

Then we say so before spending more, because advertising multiplies whatever the page already does. Diagnose it with your own numbers rather than a feeling: in Seller Central, compare unit session percentage for the ASIN against your other products and against the same ASIN before whatever changed. The arithmetic is unforgiving, because if your conversion rate halves, your cost per click has to halve to hold the same ACOS, and it will not. When conversion is the constraint, the fixes are images, the first three bullets, A+ Content, review count and price, roughly in that order, and none of them are advertising work. There is also a case where the answer is to stop: if the price cannot support the referral fee, the fulfillment fee and the surcharge with anything left for advertising, the SKU is under water before the first click. We would rather have that conversation early.