Do the division yourself
Net quantity divided by serving size. If a seller will not say how long a bottle lasts, both numbers are usually on the label anyway.
One Bottle Is A Hundred Days
The whole shelf assumes a thirty-day bottle. This one is a hundred days, which makes it cheap and makes the guarantee awkward.
Written by the Breathizen editorial team·Last updated October 11, 2026·How this page was checked
Quick answer
The bottle is 2 oz / 60 mL and the directions name a serving of 0.60 mL once a day, so 60 divided by 0.60 is 100 days. A bottle is a hundred days of product rather than thirty, and the brand does not do that division anywhere in the material supplied to this desk. Run properly, the three packs work out at $0.89, $0.59 and $0.49 a day, the cheapest per-day figure this desk has published. The same arithmetic cuts the other way on the guarantee: six bottles is 600 days of product bought against a 60-day refund window, and and the brand's own summary says most people wait three to six weeks to notice anything, which at six weeks leaves about eighteen days to claim.
Two printed numbers, and the sum between them
Almost every pricing page in this category has to hedge, because the label will not say how long a bottle lasts. This one does not.
Both numbers the sum needs are printed, in different places. 2 oz / 60 mL is on the front of the bottle. 0.60 mL is in the directions, in brackets after the four pumps. Put them together and 60 ÷ 0.60 = 100 days. That is not an estimate; it is division on two published numbers, and anybody with the same label gets the same answer.
The brand never does it. Nowhere in the material supplied to this desk does anyone divide the net quantity by the serving or state a servings-per-container figure. The number that makes this product look good is the one the seller leaves on the table — and the convention on this shelf, a thirty-day bottle, is what a reader carries in by default. At a glance $89 for a month reads as expensive. The same $89 across a hundred days is 89 cents.
The three packs, priced per day
All three prices were published in the pack supplied to this desk. The day counts and per-day figures are division on two printed numbers.
| Pack | What it costs | What it is, in days |
|---|---|---|
| 1 bottle · $89 a bottle · struck at $179 | $89 | 100 days · $0.89 a day |
| 3 bottles · $59 a bottle · struck at $537 | $177 | 300 days · $0.59 a day |
| 6 bottles · $49 a bottle · struck at $1,074 | $294 | 600 days · $0.49 a day |
| Shipping, any pack | Not published | Delivery speed was not published either |
What that means
Three bottles is the pack the brand says sells best: at 300 days, about ten months. Six bottles is 600 days, roughly twenty months.
About the product behind this blog
Breathizen is a 2 oz / 60 mL liquid, taken as four pumps — 0.60 mL — once a day. It names five ingredients: mullein leaf, ginger root, bromelain, lemon and cordyceps. No Supplement Facts panel was supplied with it in any form, so not one of those five carries a printed amount. What can be checked is the arithmetic: 60 mL at 0.60 mL a day is a hundred days a bottle, not thirty.
60-day money-back window · from $0.49 a day · 100 days a bottle · ships from the USHow to do this sum on any bottle
It takes ten seconds and it is the most useful habit in this aisle.
First, find the net quantity: on a liquid, a volume on the front panel. Second, find the serving size. On a complete label it is the first line of the Supplement Facts panel; on this product it comes out of the directions instead, which is why the directions are worth reading even when the panel is missing. Third, divide, and then price it: a pack price divided by the days it buys is a cost per day, and that is the only form in which two supplements can honestly be compared.
Fourth, and this is the step most people skip, set the days against the refund window: days of supply bought, against days in which you are allowed to change your mind. Here the first number is between a hundred and six hundred, and the second is sixty.
Where this sum normally breaks
On most products it breaks at the second step, because the label buries the serving size. Here it breaks nowhere: both numbers are printed and the division is exact. This is the one calculation Breathizen lets a reader finish.
What a hundred days does to a sixty-day window
Now run the same arithmetic in the other direction, because it does not flatter the product this time. The guarantee is 60 days from purchase, the sales side asks for at least 30 days of use before a claim, returns go to 650 Fifth Avenue, Floor 10, New York, NY 10019, and return shipping is the buyer's cost.
A single bottle already outlasts the window. A hundred days of product against sixty days of protection means you cannot finish one bottle inside the period in which you are allowed to change your mind. The brand's own timing eats most of what is left: its review summary says most people wait three to six weeks, whatever Fast-Acting on the front suggests. At six weeks you are 42 days in, which leaves about eighteen days to decide, call +1 (302) 200-3480 with the order ID and pay to send the parcel back.
And the cheapest pack is the worst case. Six bottles is 600 days of product, roughly twenty months, bought under a window that closes after two. The per-day price is the best figure on this product and the commitment behind it is the longest. A page printing only the first is selling rather than informing.
And the numbers nobody published
Shipping. No cost was published for any of the three packs, and neither was delivery speed. The figures above are pack prices divided by days; they are not what will leave your account.
The struck-through figures. $179, $537 and $1,074 sit beside the three prices, and they are a single-bottle price multiplied by the bottle count rather than a historical price for a pack. Nothing supplied to this desk says when, or whether, this product sold at $179 a bottle.
Three refund terms. Whether an opened bottle qualifies, whether part of a multi-pack can be sent back, and whether a restocking fee applies. None is stated anywhere in the pack, and on a six-bottle box at $294 those are not small questions.
And one figure nobody prints on any supplement: what you are buying per day of what. With no amount published for any of the five named ingredients, $0.49 buys 0.60 mL of a named but unweighed liquid.
Three things to do before you order
Set the days against the window
100 against 60 for one bottle, 600 against 60 for six. Decide which you are comfortable with before the price persuades you.
Ask the three refund questions first
Opened bottles, part-returns and restocking fees. Ask before you buy six, not on day fifty-nine.
Said plainly, about the product on this site
This is where the product comes off best, and it should be read that way. All three prices were published in full, with the per-bottle and struck figures beside them, which many sellers in this category do not do. $0.49 a day on the six-bottle pack is the cheapest per-day figure this desk has published.
In fairness to the price
It would be unfair to end a post about arithmetic without saying what this product does better than most of the shelf.
It publishes its prices: all three tiers, the per-bottle and struck figures, up front rather than behind a checkout. A great many sellers in this category publish nothing at all. It states its serving precisely — four pumps, 0.60 mL, once daily — and a measured volume is what makes this post possible.
And it carries a guarantee with a number attached: 60 days from purchase, with a refund timescale, a phone number and a returns address. This desk scores price transparency and cost per day as the strongest parts of the product. They sit beside a label that publishes no amount for any of its five ingredients.
One sum worth doing on any offer
Take the struck-through figure beside the price you are asked to pay, and divide it by the number of units in the pack. If the answer is the same for every tier, it is a construction rather than a former price.
Here it is the same for every tier: $179, $537 and $1,074 are $179 multiplied by one, three and six. Read as a way of showing what the per-bottle discount is worth across the pack, it is informative. What is missing is a date, because nothing supplied says when this product sold at $179 a bottle.
So a reader who reads $1,074 as a saving of $780 is reading something nobody has stood behind. The figure to work with is the one you will pay, divided by the days it buys: $294 across 600 days, and $0.49 a day is a real number in a way that $1,074 is not.
Who wrote this, and who has not reviewed it
Author and fact-checkerThe Breathizenres Editorial DeskLast updated October 11, 2026
Medical reviewerDr. Assad Oskuei, MD, PhysicianReview date: October 12, 2026
The desk reads the label at native resolution, recomputes every figure on it, and opens every source it cites. On this product there was no panel to read, so what this site publishes instead is a complete and specific account of what is missing. It earns a commission on orders placed through this site, which is why that account is at the top of the page rather than the bottom.
Why the reviewer line is highlighted
These slots are vacant on purpose. A physician's name was supplied with the product pack and we were asked to print it as the medical reviewer of these pages. He has not read them — they were written after the pack arrived — so printing his name would assert a professional endorsement that has not happened. On a product sold to people with breathing problems, that matters more than usual.
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