Buying Basics

Questions to Ask Before Buying a Supplement Online

Published July 12, 2026 · The Ingredient Brief

Most of the scrutiny people bring to an online supplement purchase lands on the product: the ingredients, the doses, the studies. But the part of the transaction that most often costs people money has nothing to do with the formula. It is the checkout — who is selling, who is charging you, what the guarantee actually covers, and whether the order is one purchase or the first payment in a series.

Our usual job is to say what a label says and what it does not say. A checkout page is also a document with an unstated half. Nothing below is a recommendation to buy anything, or a reason to avoid buying anything. These are questions that are cheap to ask before the charge and expensive to ask after it.

Who is actually selling this?

A page that shows a bottle is not necessarily run by the company that made the bottle. It may be the manufacturer's store, a distributor, a marketplace seller, or an affiliate-operated funnel routing to someone else's order form. Only one of those can honor a manufacturer's guarantee. The test is mechanical: find the legal entity name — in the terms, the privacy policy, or the fine print under the order form — and see whether it matches the brand on the label. If they differ, the guarantee you are counting on is the reseller's, unless the page says otherwise in plain words.

This matters more here than in most categories. Under the Dietary Supplement Health and Education Act, the FDA does not approve dietary supplements before they are marketed; responsibility for the product and its labeling sits with the firm that makes or distributes it. If you cannot name that firm, you have not identified who is accountable.

Who will appear on your card statement?

The name on the sales page and the name on your statement are frequently not the same: many sellers bill through a processor or merchant-of-record that uses its own descriptor. That is legal and common. It is also how a legitimate charge gets mistaken for fraud — and how an unwanted charge hides for months, because you never connect it to anything you bought. Good checkouts state the descriptor. If the page does not, keep the confirmation, so a strange line item later takes ten seconds to identify.

The refund policy is not a number of days

“180-day money-back guarantee” is a headline. The policy is the paragraph the headline summarizes, and six things routinely live in it:

• What gets refunded. The product price, or the price plus the shipping you paid? Original shipping is very often excluded.
• Who pays return shipping. Usually you — and on a multi-bottle order that is a real fraction of the refund.
• Restocking fees. A percentage deducted from the refund. Legal if disclosed; easy to miss.
• What must go back. Some policies require every bottle, empties included, and deny refunds on partial returns.
• Authorization steps. Many void the refund if you ship a return without first getting an RMA number.
• Where returns go. An international return address turns a domestic refund into a slow errand you pay to track.

None of this is inherently abusive — restocking fees and buyer-paid returns are ordinary retail. The problem is the gap between headline and terms.

When does the clock start?

A window that runs from purchase and one that runs from delivery are different products; on a slow order the difference can eat two or three weeks of a sixty-day guarantee. Find the sentence that names the trigger; if the terms are silent, assume the less favorable reading.

Shipping has a federal backstop. The FTC's Mail, Internet, or Telephone Order Merchandise Rule (16 CFR Part 435) requires a seller to have a reasonable basis to expect it can ship within the time it advertised, or, if no time was stated, within 30 days of a properly completed order. If it cannot, it must offer you — clearly, and without you having to ask — the choice to consent to the delay or to cancel and get a prompt refund. A seller that goes quiet for six weeks is not merely being slow.

Is this a subscription?

This is where the gap between what buyers think they agreed to and what they actually agreed to is widest. A pre-checked “Subscribe & Save” box, a “free trial” that converts, a discount that applies only to autoship — these are negative option offers: your silence is treated as consent to a future charge.

The rules are in flux, and it is worth knowing where they stand. The FTC adopted an amended Negative Option Rule in 2024 — the “click to cancel” rule, requiring cancellation to be at least as easy as sign-up. A federal appeals court vacated those amendments before they took effect. The FTC is now running a fresh rulemaking: in March 2026 it issued an advance notice of proposed rulemaking on how to help consumers “avoid recurring payments for products and services they did not intend to order” and cancel them “without unwarranted obstacles.” The older Prenotification Negative Option Rule (16 CFR Part 425) remains on the books, and deceptive billing remains actionable under general consumer protection law. What none of that gives you is a guaranteed one-click exit today.

So check before you buy, not after. Look for any pre-ticked box and any language containing trial, recurring, rebill, every 30 days, or until you cancel — then find the cancellation instructions. If cancelling means a phone call during business hours in a time zone you do not live in, that is a fact about the offer, and you know it while you still have the option not to proceed.

Who answers if it goes wrong?

A physical address, a working phone number, a support email that is not a no-reply, and terms that name a jurisdiction are the minimum evidence that someone is there when an order goes sideways. Their absence is not proof of bad faith, but a company that will not say where it is has told you something about how a dispute with it will go. One cheap test: email support a low-stakes question — “does the refund window start at purchase or at delivery?” You learn the answer, and what support is like.

Behind all of it sits the card. Pay by credit card rather than debit or bank transfer: the Fair Credit Billing Act gives you a dispute process other methods do not. Per the FTC's consumer guidance, if there is a billing error — charged twice, charged for something you returned, charged for something you never received — write to the issuer at the address for billing inquiries so the letter arrives within 60 days after the first bill containing the error was sent to you. The issuer must acknowledge in writing within 30 days and resolve within 90. Complaints about the quality of what you bought follow a separate route. Read your statements: that clock runs whether or not you are looking.

The checklist

Eight questions, answered from the seller's own pages, before the card number goes in. If three or more have no findable answer, you are not being asked to buy a product — you are being asked to extend credit to a stranger.

1. Who is the seller? Name the legal entity. Does it match the brand on the label, or is this a reseller?
2. What will my statement say? Find the billing descriptor, or record the amount and date so you can match it later.
3. Is anything recurring? Pre-checked boxes, trials, autoship. If yes, find the cancellation method now.
4. What does the guarantee refund? Product only, or shipping too? Any restocking fee?
5. Who pays return shipping, and to what address? Domestic or international? Is an RMA required first?
6. When does the window start and end? From purchase or delivery? Unopened product only, or all bottles including empties?
7. When does it ship? Is a delivery window stated? Absent one, the 30-day default and your right to cancel apply.
8. Who answers if this goes wrong? Address, phone, a human — and the card you paid with as the backstop.

Ten minutes on an unfamiliar site — less than one unnoticed rebill costs, and far less than a guarantee you discover, sixty days in, was never the guarantee you thought you had.

Sources

• Federal Trade Commission — Negative Option Rule (16 CFR Part 425): the current rule, the February 2026 revision conforming it to the federal court decisions that vacated the 2024 “click to cancel” amendments, and the March 2026 advance notice of proposed rulemaking.
• Federal Trade Commission, consumer advice — Using Credit Cards and Disputing Charges: the Fair Credit Billing Act dispute process, the 60-day letter deadline, and the issuer's 30-day acknowledgment and 90-day resolution duties.
• Code of Federal Regulations — 16 CFR Part 435, Mail, Internet, or Telephone Order Merchandise: the stated-time-or-30-day shipping expectation, the delay-notice requirement, and the buyer's option to cancel and receive a prompt refund.
• US Food and Drug Administration — Questions and Answers on Dietary Supplements: under DSHEA, FDA does not approve dietary supplements before they are marketed; the firm marketing the product is responsible for it.