Reading an offer

180 Capsules And A 180-Day Guarantee: Do The Arithmetic

Two published numbers sit on the same product and nobody is hiding either of them. One capsule a day, thirty to a bottle, six bottles in the largest pack. A refund window of a hundred and eighty days, counted from the day you pay. Set those beside each other and the biggest pack finishes after the window has shut.

By OptiCore Pro Team · Last updated October 29, 2026 · 7 min read · Buying well · Reviewed by Dr. Catherine Sheils, MD

The two numbers, and where each comes from

Neither figure is buried. The dose is printed on the bottle, the capsule count is on the front of it, and the guarantee length is in the seller's published terms. What nobody does is multiply them together.

One capsule daily. 30 capsules a bottle. The largest pack is six bottles, which is 180 capsules, which at the label dose is 180 days.

The guarantee is 180 days. It is counted from the date of purchase rather than from the date the parcel arrives, which is the detail that turns a coincidence into a squeeze.

The calendar the numbers imply

Laid out as dates rather than as arithmetic, the position is easier to see. Everything below is counted from the day the payment goes through.

One capsule a day, thirty to a bottle, counted from the date of payment rather than from delivery.

The two rows at the bottom are the whole of the point. A buyer who follows the label exactly on the six-bottle pack finishes the course around day 189, roughly nine days after the right to a refund closed.

Nobody is being deceived. Both numbers are published, the guarantee terms are clear about counting from purchase, and the seller is entitled to sell six bottles. It is simply what happens when two reasonable decisions are made in different rooms.

Every pack against the window

Run the same calculation across the ladder and the three tiers separate cleanly.

Allowing one to two business days of processing and three to seven of carriage before the first capsule is swallowed.

• The two-bottle pack finishes with more than a hundred days of window left, and is the shortest trial.
• The three-bottle pack finishes around day 99 with eighty-one days left, which is the only tier that lets a buyer complete a full course and still act on the result.
• The six-bottle pack is the cheapest per capsule and the only one that outlasts its own window.
• Every tier loses four to nine days of the window to processing and carriage before the first capsule.

Why ladders and windows drift apart

This is not unique to one product and it is worth understanding as a pattern rather than as a complaint about one seller.

A pack ladder is designed by whoever is thinking about price per bottle. Two, three and six is a standard shape across the whole supplement market because it gives a clear entry tier, a middle recommendation and a volume discount.

A refund window is designed by whoever is thinking about chargebacks and customer confidence. Longer is better for both, and a headline number like ninety, one hundred and eighty or three hundred and sixty-five days is chosen because it reads well.

The two decisions are rarely checked against each other, which is how a product ends up with a largest pack that exactly matches or exceeds its own guarantee.

The seller's own evaluation period

A third figure completes the set, and it comes from the same sales page as the other two. Buyers are asked to allow the product six to seven months before forming a view.

Quoted here as the seller's own request rather than as advice from this desk itself, the range runs straight through the end of the refund period. Its shortest reading finishes on the closing day. Its longest finishes a month past it.

Line the three up and the trap is visible. Follow the instruction to the letter, on the pack built to make it possible, and by the time the seller says a judgement can be made there is nothing left to act on. Two minutes with a calculator before ordering is worth more here than anything else on this page.

What this desk recommends, and why

Ninety days, on the three-bottle pack. That is a recommendation with a commercial cost attached, since the six-bottle pack is the larger sale, and it is made for three reasons.

Ninety days is a fair test of a slow supplement. Nothing on this panel is fast-acting, the distributor's own common wait is 3–4 weeks, and twelve weekly data points is a trend rather than noise.

Ninety capsules finishes around day 99, which leaves eighty-one days of the window open. A buyer who is unconvinced can act on that rather than discovering the position afterwards.

And the price difference is small on a per-day basis. The step from three bottles to six saves about twenty cents a day and costs an extra eighty-seven dollars up front.

Why not longer, if the category is slow?

Because the honest timescales in this field are much longer than any refund window. The AREDS2 follow-up reported at ten years and the Cochrane review summarises a literature measured in years. No consumer guarantee reaches that horizon, so the question is not how long the biology takes but how long a fair personal trial needs to be, and twelve weeks is a defensible answer.

The trial closest to this product's own audience, in young adults with long-term screen use, ran over a comparable span.

Three things worth doing on the day the parcel arrives

All of the arithmetic above becomes useless if the date it turns on is not written down anywhere. Three minutes on the day the box lands settles it.

1. Put the guarantee date in a calendar, counted forward from the day you paid rather than from today. The confirmation email carries the payment date and it is the one that matters.
2. Set a reminder two weeks before that date. A decision made with a fortnight in hand is a decision; one made on the last afternoon is a scramble, and the desk is closed at weekends.
3. Write the order ID somewhere other than an inbox. Every refund conversation begins with it, and an email archived eleven weeks ago is harder to find than a note on a phone.

Two smaller points belong with those. Keep the bottles in their original packaging until you have decided, because a return is easier to pack and easier to identify that way. And note the day the first capsule is actually swallowed, which on a parcel that took a week is not the day the clock started.

None of that is unique to this product. It is what any purchase with a long window and a long evaluation period asks of a buyer, and it is the difference between a guarantee that is real and one that quietly expires.

Running the same check on any offer

Five questions, answerable from any product page in under two minutes, and they generalise well beyond supplements.

1. What is the daily dose, and how many servings are in the largest pack? Multiply them.
2. How long is the refund window, in days?
3. Does the window start at purchase or at delivery? This is the question sellers answer least prominently and it is worth hunting for.
4. How long does the seller say to wait before judging the product? If that number is close to the window, the two were not designed together.
5. Which pack lets you finish a fair trial with the window still open? Buy that one.

NCCIH's guidance on using supplements wisely makes a related point about setting expectations before buying rather than afterwards. The commercial version of that advice is the five questions above.

The full terms, the calendar and the six refund steps are on the guarantee and refund policy pages, and the per-day figures for each tier are on the pricing page.

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