NAD+ buying guide
41 NAD+ figures a reader never sees
A price can exist in a page without being on it. 41 NAD+ figures here came out of markup a browser never draws — structured data, hidden variants, pieces of a plan table that renders somewhere else — and not one of them counts as a price anybody was offered.
Visible text, or it is not published
A web page is two things at once: what a browser draws, and the file it drew it from. The file routinely contains prices the drawing does not — structured data written for search engines, product variants a shop keeps for its cart, fragments of a plan table that renders somewhere else on the site, markup left behind by an earlier version of the page.
Every one of those is a real number in a real file served by a real company. None of them is a price a reader was offered, and this index does not treat them as one.
How many, and which sellers
41 of the 382 figures in this index are in that category, from 17 sellers. They are not evenly spread: 12 of them belong to one seller, and most of the 17 contribute one or two.
share of the 41 figures found in markup only
Source: Counted over the figures found in a page’s markup only, out of 382 figures from 110 sellers. Source readings: September 2026 to October 2026.
Read the top bar carefully. The largest group is not junk or leftovers — they are standing rates and prepay totals, which is to say they are exactly the figures that would have been most useful if a reader could see them.
The clearest case: a price that appears nowhere on the page
The clearest case is a price that appears nowhere on the page at all.
The retained September 2026 record in our HealthOn review separates a visible injection starting figure of $195/month from $150/mo and $350/month figures found only in page markup. The markup figures are not treated as published offers. If you find a different number in a search result or price feed, ask the seller which visible plan and conditions support your actual quote.
Our HealthSource review shows the same distinction in its September 2026 record: visible nasal pricing of $179 every four weeks sits alongside a $370 figure found only in structured data, with no resolved billing period. The latter is not a second offer you can compare or select. Confirm the product, payment period and final total on the offer you can actually purchase.
| Seller | What was found | How this index treats it |
|---|---|---|
| HealthSource | A price of $370.00 in the page’s structured data, with no cycle and no wording of its own | Recorded and marked unresolved. The prices HealthSource shows a reader on that page are different numbers, and no reader ever met this one |
| HealthOn | “$350 per month” | Recorded as present in the markup only. It is a standing monthly rate by shape, and it is not counted among the ones this site publishes |
| HealthOn | “Nad + InjectionsStarting at $150 /mo*” | A floor, in the markup only. The visible floor on the same seller is a different figure |
The rule behind all three rows is one sentence: visible text, or it is not published. A figure a reader cannot see is not a price a reader was offered, however real it is in the file.
Source: Each quotation is the wording that sat beside the figure in the page’s markup. Read September 2026.
A shop serving a variant price in structured data is doing something completely ordinary. What makes the first row interesting is the gap: the figure a search engine could read off that page and the figures a person could read off it are different numbers, and only one set was ever offered to anybody.
Why they are recorded rather than dropped
The alternative to recording them would be to drop them, and dropping them costs more than it saves. A figure found and discarded leaves nothing behind: the next person to read the same page finds it again, cannot tell whether it was considered and rejected or simply missed, and has to make the judgment over from scratch.
Keeping them also makes the judgment checkable. Every markup-only figure is on its seller’s review page, marked as what it is, beside the figures that were visible. A reader who disagrees with the call can see exactly what was excluded and why — which is not possible for a number that was quietly deleted.
What this page cannot tell you
It cannot tell you where on a page a visible figure sat. The judgment recorded here is visible or not visible, not hero or plan card or comparison table, so a reader has to take the call itself on trust rather than checking the reasoning behind it. That is the largest gap in this index’s record of its own method.
It also cannot tell you what a seller intended. A price left in a feed after a change, a variant a shop never listed, and a deliberate cloak all look identical from outside, and this page does not distinguish between them because nothing in this index can.
Where on the page did a figure sit? That is what separates a price a reader can see from one buried in the page's markup, and it is held here as a yes or no rather than as a place on the page.
Someone reading each page again and writing down where each figure sat: the banner, a plan card, a comparison table, a block of structured data. The call about what counts as published would then be checkable rather than simply stated.
The AquaVita NextGen review keeps the distinction between the product-page capture and a price visible through the shop. The Always Wellness and Recovery review also preserves figures with different levels of certainty. Read the publication label and source attached to each figure rather than treating every number in a page's markup as a public offer.
Read next
About this page
Nothing here is medical advice, diagnosis or treatment. This is a price index, and pages like this one exist because a reader cannot judge a price without knowing what the thing is. Talk to a licensed clinician before starting or stopping anything, and see the medical disclaimer.
Every count above comes from reading 110 sellers’ own pages, and each one is worked out again every time this page is built, so it cannot drift from the tables and the reviews it is drawn from. If something here is wrong, the corrections page says how that gets fixed and what has been fixed before.
Where these figures come from
These counts describe the recorded pricing information for 110 NAD+ sellers: 382 figures in all, representing 350 distinct offers after 32 repeat observations of the same offer are set aside. Of the recorded figures, 41 appear only in page markup, rather than visibly on the seller’s page.
Current source readings span September 2026 to October 2026. Each price retains the date of its own source observation. A latest source date does not mean that every provider was checked again then. Earlier price checks are retained for 14 of the 110 providers; their review pages show those readings separately. A source period alone does not establish that a price rose, fell or stayed the same.
Each seller has a pricing review showing recorded prices or quote status, original payment qualifications and source dates, including labels for figures found only in markup. We retain the underlying merchant source records internally. Reviews show the recorded pricing evidence and link through to the provider so you can confirm current terms.