Official product information
The Protoflow 60-Day Guarantee
Sixty days from the date you pay, not from your first capsule. What that means against a one, three or six-bottle pack, and what to screenshot first.
Written and reviewed by the Protoflow Editorial Desk · Last updated September 24, 2026
Quick answer
The supplied pack states sixty days from purchase, unless the sales page prints a longer window — so the clock starts when you pay, not when the parcel lands and not at your first capsule. A single bottle is thirty days and finishes with a month still to claim in. Three bottles runs thirty days past the window; six bottles leaves four sealed when it shuts. Screenshot the wording, with the date showing, before you pay.
The window
Sixty days, and the four words that decide when they start
From purchase, not from the first capsule. Everything else on this page follows from that.
The pack states 60 days from purchase, unless the sales page prints a longer window. Note where it starts: from the date you pay, not from your first capsule. Read it on the sales page before you pay and screenshot it with the date showing.
The four words doing the work are from the date of purchase. Not from delivery, not from the day you open the bottle, not from your first capsule. The clock starts when the payment goes through, and it keeps running while the parcel is in transit, while the box sits unopened on a shelf, and through any week you forget to take anything.
That is not a trick and it is the ordinary way these windows are written. It is worth stating precisely because the intuitive reading — sixty days to try the product — is not what the sentence says. Sixty days from purchase, on a product that arrives some days after purchase, is sixty days minus the shipping to actually try anything.
The conditional at the end of the sentence
Note the second half: unless the sales page prints a longer window. That conditional exists because the sales page is the document that binds and the supplied pack is not. If the page you buy from prints ninety days, it is ninety days, and our sixty is simply the figure we were given. If it prints sixty, it is sixty.
Which gives this page its one practical instruction, and it is the same one the supplied note ends on: read the window on the sales page before you pay, and screenshot it with the date showing. Sixty days later the page may read differently and your memory of it will not be evidence. A dated screenshot is.
The arithmetic
Thirty, ninety and a hundred and eighty days, against sixty
One pack finishes inside the window. The other two do not, and the difference is worth seeing in days rather than in bottles.
Set the window against the packs at two capsules a day. One bottle is 30 days of product inside a 60-day window — you finish with a month still to claim in. Three bottles is 90 days, so the last month falls outside it. Six bottles is 180 days: when the window shuts you will have taken two bottles and four will still be sealed.
Reading that against the three packs
The single bottle is the only pack that finishes inside the window. Thirty days of capsules, sixty days of window: you take the whole bottle, you form a view, and you still have around a month in which to act on it — less whatever the parcel spent in transit. Nothing forces a decision early and nothing is wasted if the decision is no.
The three-bottle pack crosses the line two-thirds of the way through. On the day the window shuts you will have taken two bottles and the third will be unopened. That third bottle is not covered by the arithmetic of the window; whether it is covered by the seller’s policy in practice is a question for the sales page wording and the order desk, not for us.
The six-bottle pack crosses it a third of the way through. Four sealed bottles, a hundred and twenty days of product, sitting on the far side of the deadline. It is the pack that asks you to be sure on day one, and it is worth knowing that is what it is asking before you choose it rather than afterwards.
The practical consequence
Whatever pack you buy, the decision date is fixed and it is not the date you run out of capsules. Write the purchase date down. Put a reminder at day fifty. The window closes on a calendar date that has nothing to do with how many capsules are left in the bottle, and the commonest way to lose a guarantee is to discover it at day sixty-five.
What a badge is
The hundred-per-cent rosette, read carefully
A rosette is artwork, not a contract
This mark ships in the supplied marketing pack and you will see it on the sales page. We have reproduced it once, here, so that you recognise it — and to say plainly what it is. A roundel with a percentage on it is a graphic. It is drawn by a designer, it carries no terms, it names no window, it sets no conditions and nobody signs it.
The thing that might actually bind is the written policy on the sales page: how long, from what date, opened or unopened, who pays the return postage, and where the parcel goes. That is a paragraph of text, not a badge, and it is the paragraph to read and photograph. If the badge and the paragraph disagree with each other, the paragraph is the one that describes what will happen.
None of that means the guarantee is not real. It means the badge is not the guarantee, in the same way that a seal on a bottle is not a test result. ODS puts the general version of this point about quality marks well: seals of that kind “do not guarantee that a product is safe or effective”, and the same reasoning applies to a marketing rosette about a refund.
Plainly
What a seller’s guarantee is, and what it is not
A term of sale, backed by the seller and your card. Not a regulatory protection, because no agency enforces one.
It is worth being exact about what kind of promise this is, because the word guarantee does a lot of unexamined work in supplement marketing.
What it is
A money-back guarantee on a dietary supplement is a commercial promise made by the seller to the buyer. It is a term of sale. Its force comes from the seller honouring it, from the payment processor that holds the transaction, and, if those fail, from your card issuer’s dispute process. Those are real mechanisms with real outcomes, and in the ordinary case the promise is simply kept.
What it is not
It is not a regulatory protection and no agency enforces a supplement money-back window. FDA does not approve dietary supplements before they are sold, and its authority over a product on the market is about safety and labelling rather than about whether a refund arrived. There is no register of guarantees, no body that certifies one, and no number to check it against. A sixty-day window is worth exactly as much as the seller behind it, plus whatever recourse your payment method gives you.
Which is why the record matters
Everything on this page comes back to the same two artefacts: a dated screenshot of the wording, and an order email with an order ID and a purchase date. Those are what a processor’s desk works from, and they are what a card dispute works from. Neither is difficult to obtain and both are impossible to reconstruct afterwards.
A guarantee is also not a substitute for reading the product before you buy it. If the reason you might want a refund is something that is printed on the label — the niacin row at more than twice its supplemental upper limit, the three rows that each carry a published caution about bleeding, or the gelatin in the other-ingredients line — you can find that out today, for nothing, in about four minutes. The refund route costs a return parcel and two months.
The sequence
Claiming inside the window, step by step
Six steps, beginning on the day you buy rather than on the day you decide.
Fix the purchase date, on the day you buy
Open the order email, find the purchase date and the order ID, and write both somewhere that is not the inbox. That date is day zero. Every deadline on this page counts forward from it, including the one that closes the window, and it is the first thing any desk will ask you for.
Read the window on the sales page and screenshot it
Sixty days from purchase is what the supplied pack states, unless the page prints longer. Photograph the wording with a visible date — your device’s own clock in the same frame is enough — so the screenshot records when you saw it as well as what it said. Do this before you pay, not after.
Set a reminder for day fifty
Ten days of margin is the difference between a decision and a scramble. It leaves time to call the desk, get the return address confirmed, pack the bottles and buy tracked postage without any of it happening on the last afternoon. Day fifty, not day fifty-nine.
Call the order desk with the order ID
The number supplied to this site is the payment processor’s order line, and a refund is exactly what it exists to handle. Ask for the current return address and confirm it against what you have, ask whether opened bottles are accepted, and write down who you spoke to and when.
Send the bottles back, tracked, and keep the receipt
Return postage is paid by the buyer. Use a tracked service and keep the receipt and the tracking number, because a refund conversation that stalls turns entirely on whether the parcel can be shown to have arrived. Include your full name, the email on the order and the order ID inside the parcel.
Watch for the credit, then check the statement
Refunds are credited a few business days after the desk approves them, then the card takes its own time to post it. If nothing appears after that has elapsed, go back to the desk with your dated notes before going to your card issuer, and keep the whole record until the money is on the statement.
The mechanics of the return itself — the address, what goes in the parcel, who pays the postage and how long the money takes — are set out in full on our refund policy page. This page is about the window; that one is about the parcel.
Questions
Protoflow FAQ: guarantee questions
How long is the money-back guarantee?
Sixty days from purchase, per the supplied pack, unless the sales page prints a longer window. Read it there before you pay and screenshot it with the date showing.
How long before I decide?
Day 60, because that is when the guarantee closes, and it runs from the date you paid rather than from your first capsule. Nothing is published about how long this formula takes to do anything, because no trial of it exists.
Which pack should I buy?
If you are trying it, one bottle is thirty days and finishes with a month of guarantee still to run. The three- and six-bottle packs add the four digital bonuses, and the six-bottle pack runs 120 days past the window.
How do I claim a refund?
Call the order desk with your order ID. Returns go to 122 East 42nd Street, Floor 18, New York, NY 10168. Include your full name, the email on the order and the order ID.
Does the FDA approve supplements like this?
No. ODS: “The U.S. Food and Drug Administration (FDA) does not determine whether dietary supplements are effective before they are marketed.” FDA’s own description of its role is that it can act against an adulterated or misbranded product “after it reaches the market”.
References
Sources for this page
- U.S. Food and Drug Administration. Dietary Supplements. www.fda.gov. Accessed September 24, 2026.
- Office of Dietary Supplements, National Institutes of Health. Dietary Supplements: What You Need to Know. ods.od.nih.gov. Accessed September 24, 2026.
- National Center for Complementary and Integrative Health, NIH. Using Dietary Supplements Wisely. www.nccih.nih.gov. Accessed September 24, 2026.
Next
Keep reading
Read the Protoflow guarantee on the official page
60 capsules a bottle, two a day with water, thirty days a bottle. The window is sixty days from purchase per the supplied pack, unless the sales page prints longer — read it there and screenshot it with the date. The order desk on +1 (302) 200-3480 handles refunds.
Price shown at checkout · 60-day window from the date of purchase · ships from inside the US · the label’s own support line is +1 (302) 200-3480