NAD+ dosing and timing: what a month of it actually costs
Almost every question about NAD+ timing — how often to dose, whether to take it in the morning, how long a course runs — turns into a money question the moment you try to buy it. A seller who charges you every four weeks charges you thirteen times a year, not twelve. A seller who bills every forty-eight weeks has taken a year’s money before you know whether you want a second month. And a seller who prints a dosing frequency where a billing cycle should be has told you when to use the product, not when you will be charged for it.
We read 376 NAD+ prices from 106 sellers on September 2026, and classified the billing cycle of every one of them by hand from the seller’s own printed words. This page is what that exercise says about timing.
A rate is not a month
The price model behind this site has a field called cycleClass, and it exists because of a single recurring failure: a number that looks monthly and is not. Every price in the corpus is classified into one of eleven cycle values, decided by a person reading what the seller printed, and the seller’s own wording is kept beside it so the classification can be checked.
133 of the 376 prices are recurring rates. 93 of those bill on a calendar month. The remaining 40 bill on something else, and the difference is not cosmetic: a four-week cycle produces 13.04 charges a year against a calendar month’s 12, which is an 8.7% difference nobody advertises.
of the 40 recurring rates that are not calendar months
Counted from the 133 offers whose kind is rate and whose cycleClass is not month, in the roster read on September 2026. Both fields are closed enumerations decided by hand from the seller’s printed wording, not parsed from prose.
Four prices, four different years
The clearest example in the corpus is one seller pricing the same sublingual product four ways. The figure falls as the commitment lengthens, and the cycle wording is the only thing telling you what you have agreed to.
“Billed every 4 weeks” beside $99, and “Billed every 48 weeks” beside $84.
Read quickly, $99 and $84 look like a 15% saving on the same thing. They are not the same thing. One is a charge that recurs every four weeks and can be stopped after one of them; the other is a year taken in advance. Whether that is a good trade depends entirely on something neither figure states — how long anyone should be taking it — and on our reading of this seller’s page, it does not say.
A second seller in the corpus separates the two cadences explicitly, which is rarer and better:
“Billed every 12 months, shipped every 2 months” — beside $155.
Billed on one clock, shipped on another. That is a perfectly honest arrangement and it is impossible to reason about from the number alone, which is why the wording is carried into the model and printed beside every figure this site publishes.
A dosing frequency is not a billing cycle
One value in the cycle enumeration exists for a specific confusion: dosing-frequency-not-a-cycle. It is applied where the only cadence-shaped phrase near a price describes how to use the product rather than how often you will be charged for it.
“(used daily)” — the only cadence printed beside $179.
“(used daily)” answers the timing question and says nothing at all about the money question. A price parser reading that page would very reasonably record a daily cycle and produce a monthly cost thirty times too large. This site records it as a dosing frequency, refuses to derive a monthly figure from it, and says so.
One further price in the corpus states two subscription cadences beside a single figure and resolves to neither:
“DELIVERY FREQUENCY Monthly subscription 6-week subscription”
That is classified unresolved-two-cadences and is excluded from every monthly figure on this site. It is the only one, and naming it is cheaper than pretending it resolves.
Most sellers never publish a monthly rate at all
Behind the cycle question is a larger one. A reader looking for “what does NAD+ cost a month” is asking for a number that most of this market does not print.
Sellers publishing a standing monthly rate
46 of 106 — the empty part of this bar is the finding
Prices that are a standing monthly rate
73 of 376
Prices stating no dose at all
250 of 376
Computed at build time from the roster read on September 2026. A seller counts as publishing a standing monthly rate only where at least one of its prices is published to a reader, is a recurring rate, is billed on a calendar month, and is not a duplicate of a figure already counted.
60 of 106 sellers publish something else: a floor price you cannot commit to, a prepaid total covering an unstated number of months, an introductory rate that expires, or nothing a reader could act on. That is not a criticism of any one of them. It is a description of a market where the standard unit of comparison is not published, and it is the reason this site compares milligrams instead.
What we will not tell you
We also will not derive a monthly cost from a price whose cycle we could not resolve, and we will not name a cheapest seller. Cycles differ, the kind of number differs, and 250 of 376 prices state no dose — so a “cheapest” ranking would be comparing four different quantities and calling the result a price.
How the 376 prices were classified, and what the duplicates are
Every price was read by a person from the seller’s own page and typed into a closed set of fields: what kind of number it is, what cycle it is billed on, which route it is for, what dose it states, and whether a reader can actually see it. The seller’s own wording is carried beside each classification and re-checked as an exact substring of the page it came from.
32 of the 376 prices are the same figure seen on a second surface — a plan card and a checkout page, for instance — leaving 344 distinct prices. Counts of “how many prices exist” on this site dedupe; counts of “how many times a figure is shown” do not, and every figure says which it is.
A further 41 figures are present in a page’s markup without ever being shown to a reader. Those are recorded and are never quoted as published prices: presence is not publication.
40 of 133
recurring rates not billed on a calendar month
60 of 106
sellers publishing no standing monthly rate
250 of 376
prices stating no dose
41 of 376
figures present in the markup but never shown
Is a four-week plan the same as a monthly plan?
No. Four weeks recurs 13.04 times a year and a calendar month recurs 12, so the same headline figure costs about 8.7% more a year on a four-week cycle. In this roster 16 recurring rates are billed in weeks or days rather than months.
Why does this site not publish a monthly cost for every seller?
Because dividing a prepaid total or a starting-from figure by a number of months invents a price the seller never quoted. Only 73 of 376 prices are standing monthly rates. Where a figure can honestly be divided, it is divided by milligrams instead, and the division is printed beside the answer.
How current are these prices?
Every one of them was read on September 2026 and carries that date wherever it appears. A price with no verification date is wrong about half the time. This roster has been read once, on one day, so it can tell you when it was read and nothing about how prices have moved since.
Where do I compare actual numbers?
The cost-per-milligram board holds every price in this roster that states enough to divide, with the arithmetic printed under each figure, and the calculator will run a quote you have been given through the same division. The calculator carries no paid links at all.