The questions behind the promise
Read the research.
See the limits.
Clear explanations of NAD+ science, delivery options and commercial claims. A place to understand what a study found—and what it did not.
Start with NAD+, NR and NMN ↗The evidence behind the claims
Human studies, biomarkers, ingredient quality and the boundaries of what we know.
NR vs NMN vs NAD+
The ingredient and route matter as much as the label. How human studies of precursors differ from studies of NAD+ itself.
NAD+ biomarkers vs health benefits
What a higher laboratory result can establish, and what still needs a meaningful clinical outcome.
NAD+ for energy and fatigue
Read the fatigue and function outcomes behind energy claims, with the placebo comparisons kept in view.
NAD+ and anti-aging evidence
Separate short human trials, laboratory findings and lifespan promises before evaluating a longevity claim.
Understanding NAD+ blood tests
Sample types, reference intervals and practical questions to ask before paying for a laboratory package.
NAD+ supplement quality and COAs
How to match a certificate of analysis to a product and batch, and what quality testing cannot establish.
NAD+ FDA and compounding questions
FDA approval, compounded preparations and the sterile-ingredient warning, with questions for the prescriber and pharmacy.
Understand the delivery options
What the format changes, which safety questions to ask and what a schedule really describes.
NAD+ injection side effects
Which questions are worth asking depends on the route, and on whether the seller states a dose at all.
NAD+ IV vs injection
A per-session price and a per-month price are not comparable until you have the milligrams for both.
How often you take NAD+
Frequency is usually a billing cadence before it is a clinical one. Here is how to tell which you are looking at.
What NAD+ injections are
A vial and syringes on a subscription, not a clinic drip. What sellers charge for one, how few state the milligrams, and what has been measured in people.
Do NAD+ patches work
No published study has measured NAD+ getting through human skin from a patch. What is sold anyway, and the search that says so.
What NAD+ IV therapy is
A clinic session billed by the session, not by the month. What sellers publish about one, and the two studies that followed people through an infusion.
Make sense of the price
Original analysis of published provider figures, with route, ingredients and missing details kept in view.
The nine routes
NAD+ is sold nine ways, and a third of the sellers name none of them. Every route, how many sellers use each, and how large the silent group is.
“Route not stated”
The second largest group on the roster is the sellers who did not say. Some wrote nothing; others wrote a sentence that still is not a route. Every one of those sentences.
Sublingual NAD+ and precursors
Two different molecules are sold under one word. On 18 of 26 sellers it took a second look at the page to tell which one was on sale.
What a NAD+ price includes
Most figures never say what is in the number, and whether a seller tells you depends on the route. What this roster can say, and the one thing it cannot.
NAD+ price by route
Is the spray cheaper than the injection? Fifteen sellers price both, and they do not agree with each other.
Sellers that sell NAD+ more than one way
A brand offering NAD+ two ways is offering two purchases at two prices. How many do, which routes travel together, and how many never say.
Who states the milligrams
A price without a dose is not comparable. The nasal sellers state milligrams more often than the injection sellers do, and the routeless figures state them least.
How a route is billed
Not one figure for the two routes that need a clinic is a standing monthly rate. Sublingual is the weekly route. What kind of number each route publishes.
Read beyond the headline
What product pages reveal about concentration, supply, billing and the information a buyer still needs.
When the URL names a route
A seller's own address is the first route claim a buyer meets. “Nasal” meant nasal every time. “Oral” never once meant the precursor a reader would expect.
Pages that publish no price
The most common outcome of opening a NAD+ product page is not a number. What the silent ones did instead, and the one signal that predicted them in advance.
Prices in the markup
Most NAD+ pages carry dollar amounts you are not shown. Why that is a reason to open the toggles rather than an accusation.
The price behind the intake
“They don’t publish a price” is only honest if you clicked the button. Thirty-three sellers were followed one click past the page. Almost none of it was a price.
Pages that price two routes
Where a spray and a needle are sold in one grid, a route choice looks like a price choice. Which routes get sold side by side, and how deep it goes.