NAD+ under $160 a month

The line is not picked by hand. It is the lower quartile of the 187 monthly NAD+ injection prices we have read, one figure per seller, rounded up to the next ten dollars, and it moves when those prices do.

Under the line, the sellers we have reviewed are ranked by our commercial rubric: whether the advertised price is the one billed, the all-in month against the market, membership, prepay and cancellation terms, and the cost per milligram where it is stated. Clinical support counts for little.

The rest are listed by price. We have read each one's NAD+ price on its own site, but not its fees or terms, so none of them is given a score or a rank. A nasal spray, a cream and an injection can all sit under the line; each row names its form.