Best NAD+ Source: Scored on What an IV Room Would Demand

A ranking is only worth reading if you can see the scoring before the winner, so here is ours in full. Testing scope carries 35 points, and it only counts where bacterial endotoxins testing is part of it. Documentation carries 25: a lot-specific certificate, a named laboratory, and a stated grade. Price transparency carries 20, meaning list price, discounted price and quantity tiers all published rather than quoted. Dispatch and stock location carry 20.

Two things we deliberately did not score. Purity percentages arriving without a named laboratory behind them, because a number with no assay attached is a claim rather than evidence. And reviews hosted by the seller, since the seller decides what appears there. The same rule governs everything we publish and it is set out on our methodology page.

One entry below is a named business and four are categories. That is deliberate: we will not invent competitor brand names or attach fabricated prices to real ones, so where we cannot verify a specific vendor we score the category and say what it structurally can and cannot do. We earn a commission on the top entry, explained on our affiliate disclosure page.

On a peptide ranking we would weight identity testing hardest, because the live question is whether the vial contains the compound at all. NAD+ inverts that. It is a coenzyme produced at industrial scale for several markets, and the live question is which market your batch was made for.

FDA answered why that matters in a compounding risk notice, content current as of 30 October 2024. The agency "is aware of compounders using food-grade nicotinamide adenine dinucleotide (NAD+) sold by repackagers to make intravenous products," notes that food-grade ingredients are "not suitable for compounding sterile drugs without appropriate processing, due to the high risk of contamination with microbes and endotoxins," and reports adverse events after NAD+ injectable drugs including "severe chills, shaking, vomiting and fatigue with some requiring medical treatment," consistent with excessive endotoxin levels. The notice is here.

A purity assay will not detect that. Bacterial endotoxins testing, usually the LAL assay and reported in endotoxin units, will. That single asymmetry is why one line on a certificate outranks everything else on this page, and why a source scoring perfectly on price and dispatch can still finish behind one that is slower and dearer.

Ascension takes the top position among sources you can buy from directly, and the scoring is mixed rather than glowing. Price transparency is its strongest line and it is a clean 20: one listing, NAD+ 1,000 mg, $104.00 at list and $52.00 with the code PEPTIDEDECK, which is $5.20 per 100 mg. Quantity tiers of three, five and ten units take 3, 5 and 10 percent off the list price, nothing published says the code stacks with them, and free shipping starts at $250. Every one of those numbers is on the page rather than behind an enquiry form.

Dispatch scores well too. A published 2pm CST cutoff for same-day shipping, Monday to Saturday, is only keepable with material already in a US facility, which removes a customs border and weeks of unmonitored transit from the transaction. On testing it states two independent laboratories test every batch, which is more than this market usually publishes, and we have not run those analyses ourselves. The check we would want you to make before ordering is whether the certificate attached to your lot reports bacterial endotoxins and not identity and purity alone.

What it cannot offer is anything in this category. No prescriber, no pharmacist, no label, no follow-up and no recall route that reaches you. Best here means best documented among research suppliers, and the full vetting sequence is on our supplier checklist.

This tier scores highest of anything on the page for sourcing standard, and finishes second only because two of the four criteria are about access and published pricing, which it fails almost completely. It is worth understanding rather than skipping, because most rankings in this niche pretend it does not exist.

The reason it scores where it does is a rule with actual force behind it. A pharmacy compounding from a bulk substance must use material accompanied by a valid certificate of analysis, manufactured by an establishment registered with FDA under section 510, as set out on FDA's bulk drug substances page. Nicotinamide adenine dinucleotide appears in category 1 of FDA's nominated bulk substances list, updated 14 May 2026, meaning the agency does not intend to act against compounders using it while its evaluation is pending, provided the guidance conditions are met. That is a non-enforcement position, not an approval, and it is not permanent.

It loses points where you would expect. Prices are quoted rather than published, many prescribers decline because there is no approved product to work from, and there is no version of this you can arrange in an afternoon. Our page on NAD+ without a prescription sets out the boundaries in more detail.

This is the tier the top entry belongs to, scored as a category, and the honest position is that several sellers in it are close to indistinguishable from our pick on the documents. If one of them publishes a lot-matched certificate from a named laboratory that includes an endotoxin result, it outscores our pick on the heaviest criterion, and you should buy from it instead.

What drags the tier average down is how many members publish a single purity percentage and a stock photograph. The distribution here is wide, the storefronts look similar, and the difference between a good one and a poor one is entirely in documents most buyers never open. That is why the checklist matters more than the ranking does.

A clinic ranks fourth as a source and that is not a comment on clinics as businesses. It is a scoring artefact with a real point underneath it: as a source, a clinic publishes almost nothing. You cannot see the certificate, you usually cannot learn which pharmacy prepared the preparation, and the grade of the underlying material is not something the booking page addresses.

That is the same information gap FDA's notice describes, sitting inside the regulated channel rather than outside it. It is also completely fixable by asking. A practice that will name its compounding pharmacy, confirm pharmaceutical grade and show you an endotoxin result has just moved itself to the top of this table for the purposes of your decision. A practice that treats the question as rude has answered it. What you are genuinely buying at a clinic is supervision and sterile preparation, which is worth real money, and our price comparison is where that arithmetic lives.

Last, and the gap is not close. This tier prices below everything above it, publishes generic certificates rather than lot-matched ones, and puts the importer risk, the duty and the unmonitored transit time on you. The repackager step is the specific thing FDA's notice names, and a listing that has passed through one is a listing whose provenance nobody downstream can reconstruct.

The recurring reader mistake is reading the price gap as efficiency. Endotoxin testing costs money, domestic warehousing costs money, and a seller doing neither can undercut one doing both. Cheap here usually means untested. Our scam checker is built around that pattern if you want to run a specific offer through it.

Scores are out of the weights published at the top of the page. They reflect what each source publishes rather than what it is like, which is the only thing you can check before spending money.

The best NAD+ source depends on which of the four criteria you refuse to compromise on. If it is documentation and sourcing standard, the answer is a prescriber and a compounding pharmacy, and it will cost you time and an unpublished price. If it is transparency and speed at a price you can see in advance, it is Ascension Peptides at $5.20 per 100 mg, with no clinician anywhere in the transaction.

Whichever you pick, the deciding line is the same one, and it is the reason this page weights the way it does. Ask for the endotoxin result against your specific lot. Every source above can be asked, most of them can answer, and the ones that will not have told you where they sit on this table more reliably than any score we could assign.