How much does Double Wood NMN cost?

$48.95 for one bottle of 60 capsules, $93.01 for two and $132.17 for three. The serving is two capsules, so one bottle is a month. That is 7.5 grams of NMN per bottle, or about $6.53 per gram.

Is it 250 mg per capsule or per serving?

Per serving. The Supplement Facts panel reads "Serving Size: 2 Capsules … Nicotinamide Mononucleotide 250mg," the directions on the same page describe taking one 125 mg capsule in the morning and another in the afternoon, and the company's certificate graphic is headed "Ingredient (2 Capsule Serving) … Specification 250mg." Only the FAQ says per capsule, and it is the one place that is wrong. If you were budgeting on 500 mg a day from this bottle, halve it.

What is actually in the certificate of analysis?

Tick marks. We opened it in September 2026. It names the ingredient and a 250 mg specification for a two-capsule serving, then shows pass marks against four microbiological tests and four heavy metals with no measured values beside any of them, no lot number, no production date and no accreditation mark. The laboratory line reads "Tested By: Brand Nutraceuticals Inc.", and beneath the table it says certificate of analysis and third-party lab documentation are available upon request. So the detailed claims in the FAQ — HPLC assay, ≥99% purity, USP limits — are not evidenced by the document the page links to.

Do the studies Double Wood cites say what the page says they say?

One holds up, one is stretched, and one is too vague to check. The Yoshino trial in Science in 2021 is real: ten weeks, randomized and placebo-controlled, in postmenopausal women with prediabetes. It found NMN improved muscle insulin sensitivity. The 2022 Uthever trial is real too — 66 adults, two 150 mg capsules daily for 60 days, blood NAD⁺/NADH up 38% against 14.3% on placebo. But Double Wood adds that researchers "reported improvements in several measures related to physical performance." No such measure is in that paper, whose abstract reports NAD⁺/NADH, an SF-36 survey and an insulin-resistance index. Its sole author worked for the ingredient's manufacturer. The third, headed "Igarashi et al. – Human Safety Studies", names no journal, no year and no paper. There is nothing to check.

Is the price justified?

Only by the testing, and the testing is the part you cannot see. Nothing about the formula commands a premium — it is NMN, rice flour and a gelatin capsule, the same three things the cheapest listings contain. What Double Wood is selling above the material is assurance, and at $6.53 a gram that assurance needs to be legible. Ask for the batch certificate before you buy, and check the figure on it against the label rather than against the FAQ.

Is Double Wood expensive compared with other NAD⁺ precursor supplements providers?

Double Wood publishes a starting figure of $48.95/mo. Across the 116 NAD⁺ precursor supplements providers we review that publish a single monthly figure, those run $17.97 to $799 with a median of $175, which puts Double Wood below the median, toward the cheaper end. The other 33 NAD⁺ precursor supplements providers we review quote only after an intake or price by dose, so they are not in that comparison. A starting figure is not a bill — labs, consultations and shipping are often charged separately, so confirm what your own quote includes.

Updated September 2026

Double Wood review

Confident page, thin paperwork

A detailed, research-quoting listing. Its certificate of analysis contains no results, and its FAQ contradicts its own label.

Our verdict

Double Wood writes an unusually detailed NMN page. Dosing guidance, an HPLC explanation, three cited studies, an ISO/IEC 17025 reference. Then it fails on the two things a reader can actually check. The FAQ says the certificate verifies 250 mg of NMN per capsule. The label says 250 mg per two-capsule serving, and so does the company's own certificate graphic. And that graphic is not a certificate of analysis. It is a row of tick marks with no measured values, no lot number and no date, above a line saying the real documentation is available on request. At $48.95 for 7.5 grams you are paying roughly ten times the bulk per-gram cost, for paperwork you have not been shown.

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At a glance

Category: NMN supplement
Format: Oral precursor
From: $48.95
Dose published: Yes
Prescription: Not required
Compounded: No
Updated: September 2026

What it is

A 60-capsule bottle taken as two capsules a day, delivering 250 mg of nicotinamide mononucleotide per serving with gelatin and organic rice flour as the only other ingredients. Double Wood also sells NMN as loose powder and sells the reduced form, NMNH, separately. The brand's positioning is single-ingredient supplements with heavy explanatory copy.

How it works

Retail. No consultation, no prescriber, no subscription required. The page states manufacture in an FDA-registered cGMP facility in the USA from globally sourced materials, and claims batch testing by an ISO/IEC 17025-accredited laboratory for identity, purity, heavy metals and microbial safety, with β-NMN verified by HPLC against reference standards. Facility registration is a statement about where something is made; it is not a review of the product.

Pricing transparency

$48.95 for one bottle, $93.01 for two and $132.17 for three, so the multipacks save about 5% and 10% respectively. The bottle carries 30 servings of 250 mg, which is 7.5 grams of NMN — about $6.53 per gram, and about $48.95 per month at the label's own suggested two capsules a day. The loose powder is $129.95. Set that against the same molecule sold in bulk at well under a dollar a gram and the premium here is large enough that the quality case behind it needs to be strong.

Branded vs compounded

A dietary supplement. Not FDA-approved, and not reviewed by the FDA for safety or efficacy before it is sold. The label itself is clean and complete: 250 mg per two-capsule serving, 30 servings, two named carriers, nothing hidden in a blend. The problem is the layer of assurance built on top of it. The page's FAQ states that the certificate verifies 250 mg of β-NMN per capsule, which would be 500 mg a day — double what the panel says the serving contains. The company's own certificate graphic uses the correct figure, headed "Ingredient (2 Capsule Serving) … Specification 250mg," so the FAQ is wrong against Double Wood's own documents.

Pros and watch-outs

What we like

Publishes a full Supplement Facts panel with serving size, container count and milligrams
Only two carriers, both named, with no proprietary blend
Explains its testing methods in unusual detail, down to the isomer and the assay
Gives real dosing guidance rather than "take as directed"
Names two checkable published trials rather than gesturing at "research"

Watch-outs

The FAQ says 250 mg per capsule; the label and the company's own certificate say per two-capsule serving
The linked certificate of analysis carries no measured values, no lot number and no date
Real test documentation is offered only "upon request", so nothing is published to check
About $6.53 per gram of NMN, many times the cost of the same molecule bought plainly
Its summary of the Uthever trial credits that study with physical-performance findings its abstract does not report

Best for

Someone who wants a well-explained 250 mg serving from a single-ingredient brand and is willing to email for the batch report rather than read one on the page.

Who should look elsewhere

Cost-driven buyers, and anyone who takes a published certificate of analysis at face value without opening it. This one is worth opening.

How Double Wood compares

A few alternatives worth a look, depending on what you’re optimizing for.

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Anyone who wants the price up front
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The lowest listed injection price
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CoreAge Rx
The lowest published NAD⁺ price
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Laura Bennett

Evidence & trials · Reviewed and last verified September 2026

How we assessed this. This review reflects NAD Picks’s own read of Double Wood’s publicly-stated model — pricing transparency, clinical oversight, medication clarity, and access — against our editorial methodology. We publish no fabricated ratings or first-hand outcomes. A partnership never changes the assessment — see how we make money.

Frequently asked

How much does Double Wood NMN cost?: $48.95 for one bottle of 60 capsules, $93.01 for two and $132.17 for three. The serving is two capsules, so one bottle is a month. That is 7.5 grams of NMN per bottle, or about $6.53 per gram.
Is it 250 mg per capsule or per serving?: Per serving. The Supplement Facts panel reads "Serving Size: 2 Capsules … Nicotinamide Mononucleotide 250mg," the directions on the same page describe taking one 125 mg capsule in the morning and another in the afternoon, and the company's certificate graphic is headed "Ingredient (2 Capsule Serving) … Specification 250mg." Only the FAQ says per capsule, and it is the one place that is wrong. If you were budgeting on 500 mg a day from this bottle, halve it.
What is actually in the certificate of analysis?: Tick marks. We opened it in September 2026. It names the ingredient and a 250 mg specification for a two-capsule serving, then shows pass marks against four microbiological tests and four heavy metals with no measured values beside any of them, no lot number, no production date and no accreditation mark. The laboratory line reads "Tested By: Brand Nutraceuticals Inc.", and beneath the table it says certificate of analysis and third-party lab documentation are available upon request. So the detailed claims in the FAQ — HPLC assay, ≥99% purity, USP limits — are not evidenced by the document the page links to.
Do the studies Double Wood cites say what the page says they say?: One holds up, one is stretched, and one is too vague to check. The Yoshino trial in Science in 2021 is real: ten weeks, randomized and placebo-controlled, in postmenopausal women with prediabetes. It found NMN improved muscle insulin sensitivity. The 2022 Uthever trial is real too — 66 adults, two 150 mg capsules daily for 60 days, blood NAD⁺/NADH up 38% against 14.3% on placebo. But Double Wood adds that researchers "reported improvements in several measures related to physical performance." No such measure is in that paper, whose abstract reports NAD⁺/NADH, an SF-36 survey and an insulin-resistance index. Its sole author worked for the ingredient's manufacturer. The third, headed "Igarashi et al. – Human Safety Studies", names no journal, no year and no paper. There is nothing to check.
Is the price justified?: Only by the testing, and the testing is the part you cannot see. Nothing about the formula commands a premium — it is NMN, rice flour and a gelatin capsule, the same three things the cheapest listings contain. What Double Wood is selling above the material is assurance, and at $6.53 a gram that assurance needs to be legible. Ask for the batch certificate before you buy, and check the figure on it against the label rather than against the FAQ.
Is Double Wood expensive compared with other NAD⁺ precursor supplements providers?: Double Wood publishes a starting figure of $48.95/mo. Across the 116 NAD⁺ precursor supplements providers we review that publish a single monthly figure, those run $17.97 to $799 with a median of $175, which puts Double Wood below the median, toward the cheaper end. The other 33 NAD⁺ precursor supplements providers we review quote only after an intake or price by dose, so they are not in that comparison. A starting figure is not a bill — labs, consultations and shipping are often charged separately, so confirm what your own quote includes.

Check availability →

Or compare every NAD⁺ supplement.