Scored on the same 100-point, five-axis rubric. Third-party comparisons are limited to overseas brands, and unverifiable low-quality items appear as a category rather than by name.
Published
2026-08-20
·
Last reviewed
2026-08-20
·
Data as of
2026-08 — Based on official retailer listings and published test reports
Grade
Product
Total
Cost per active unit/100mg
Daily costWomen / Men
Days of supply
S
Rokit America NMN + Pterostilbene (US)
250 mg/day, 99.9% purity, combined with pterostilbene (polyphenol stack) — capsule format aimed at research-style stacking
Retailer link pending
90/100
680원
1,700원 / 2,550원
30 / 20d
S
Domestic NMN stick complexCategory (not named)
250 mg/day, published 99.9% purity, with skin-related ingredients (hyaluronic acid, collagen, elastin) — a stick powder taken without water
85/100
Not calculable
Not calculable
—
A
ProHealth NMN Pro (US, Uthever®)
250–500 mg/day, third-party HPLC testing, sustained-release tablet. An S candidate once Self-GRAS and GLP documentation is verified
Retailer link pending
78/100
Not calculable
Not calculable
—
B
Double Wood NMN (US)
250 mg/day, purity 97%+ (below 99%), COA published — budget tier
No COA, undisclosed purity and sourcing — a category where US market surveys report under-dosing and adulteration
10/100
Not calculable
Not calculable
—
S
90/100
Rokit America NMN + Pterostilbene (US)
250 mg/day, 99.9% purity, combined with pterostilbene (polyphenol stack) — capsule format aimed at research-style stacking
Cost per active unit
680원/100mg
Daily cost · Women
1,700원
Daily cost · Men
2,550원
Days of supply
30 / 20d
Axis scores
Effective dose
30/30
Purity & impurity testing
24/25
Manufacturing & safety certification
17/20
Raw-material grade
13/15
Information transparency
6/10
Retailer link pending
S
85/100
Domestic NMN stick complex
250 mg/day, published 99.9% purity, with skin-related ingredients (hyaluronic acid, collagen, elastin) — a stick powder taken without water
Cost per active unit
Not calculable
Daily cost · Women
—
Daily cost · Men
—
Days of supply
—
Axis scores
Effective dose
30/30
Purity & impurity testing
22/25
Manufacturing & safety certification
15/20
Raw-material grade
10/15
Information transparency
8/10
A
78/100
ProHealth NMN Pro (US, Uthever®)
250–500 mg/day, third-party HPLC testing, sustained-release tablet. An S candidate once Self-GRAS and GLP documentation is verified
Cost per active unit
Not calculable
Daily cost · Women
—
Daily cost · Men
—
Days of supply
—
Axis scores
Effective dose
26/30
Purity & impurity testing
20/25
Manufacturing & safety certification
12/20
Raw-material grade
13/15
Information transparency
7/10
Retailer link pending
B
61/100
Double Wood NMN (US)
250 mg/day, purity 97%+ (below 99%), COA published — budget tier
Cost per active unit
Not calculable
Daily cost · Women
—
Daily cost · Men
—
Days of supply
—
Axis scores
Effective dose
26/30
Purity & impurity testing
14/25
Manufacturing & safety certification
10/20
Raw-material grade
4/15
Information transparency
7/10
Retailer link pending
C
10/100
Unbranded import / marketplace NMN
No COA, undisclosed purity and sourcing — a category where US market surveys report under-dosing and adulteration
Cost per active unit
Not calculable
Daily cost · Women
—
Daily cost · Men
—
Days of supply
—
Axis scores
Effective dose
8/30
Purity & impurity testing
0/25
Manufacturing & safety certification
0/20
Raw-material grade
0/15
Information transparency
2/10
See axis-level scores (5 axes, 100 points)
Product
① Effective dose/30
② Purity & impurity testing/25
③ Manufacturing & safety certification/20
④ Raw-material grade/15
⑤ Information transparency/10
Rokit America NMN + Pterostilbene (US)
30
24
17
13
6
Domestic NMN stick complex
30
22
15
10
8
ProHealth NMN Pro (US, Uthever®)
26
20
12
13
7
Double Wood NMN (US)
26
14
10
4
7
Unbranded import / marketplace NMN
8
0
0
0
2
Rokit America NMN + Pterostilbene (US)
① Effective dose
30/30
② Purity & impurity testing
24/25
③ Manufacturing & safety certification
17/20
④ Raw-material grade
13/15
⑤ Information transparency
6/10
Domestic NMN stick complex
① Effective dose
30/30
② Purity & impurity testing
22/25
③ Manufacturing & safety certification
15/20
④ Raw-material grade
10/15
⑤ Information transparency
8/10
ProHealth NMN Pro (US, Uthever®)
① Effective dose
26/30
② Purity & impurity testing
20/25
③ Manufacturing & safety certification
12/20
④ Raw-material grade
13/15
⑤ Information transparency
7/10
Double Wood NMN (US)
① Effective dose
26/30
② Purity & impurity testing
14/25
③ Manufacturing & safety certification
10/20
④ Raw-material grade
4/15
⑤ Information transparency
7/10
Unbranded import / marketplace NMN
① Effective dose
8/30
② Purity & impurity testing
0/25
③ Manufacturing & safety certification
0/20
④ Raw-material grade
0/15
⑤ Information transparency
2/10
Third-party comparisons are limited to overseas brands. Among domestically distributed products, only our own is included. Product links carry no affiliate arrangement. A purchase through a link does not affect any grade or its position. Based on official retailer listings and published test reports · Data as of 2026-08
So which one should you choose?
To summarise the standard — 250 mg a day, purity of 99% or above with test results, certification, named sourcing, and price per 100 mg. Among the named products, one reaches S grade against it.
If you want research-style stacking —
로SRokit America NMN + Pterostilbene (US)680원/100mg
A polyphenol stack with pterostilbene and a deep raw-material verification record (Self-GRAS, GLP). It is a capsule, so it needs water.
Retailer link pending
Whichever you choose, it should now be clear what to look for on the label.
Independence: This site is operated by KNI. Every product is scored against the same public criteria, and advertising or affiliate arrangements play no part in grading.
Strengths and limits, product by product
S
Rokit America NMN + Pterostilbene (US)
250 mg/day, 99.9% purity, combined with pterostilbene (polyphenol stack) — capsule format aimed at research-style stacking
90/100
Criteria met
+Deep raw-material verification history (Self-GRAS, GLP)
+Purity published at 99.9%
+Polyphenol stack design
Unverified or unmet
−A complex product — the pterostilbene is wasted cost if you do not want it
−Capsule format requires water
S
Domestic NMN stick complex
250 mg/day, published 99.9% purity, with skin-related ingredients (hyaluronic acid, collagen, elastin) — a stick powder taken without water
85/100
Criteria met
+Meets the 250 mg dose studied in women in a single daily serving
+Purity published as a figure (99.9%)
+Stick powder taken without water — favours long-term consistency
+Includes skin-related ingredients alongside NMN
Unverified or unmet
−Raw-material name and patent number are not yet published, so it does not score full marks on the raw-material axis (to be re-scored once documented)
−Third-party COA availability is unconfirmed, costing points on the purity axis
−It is a complex formulation — if you want NMN alone, other options exist
A
ProHealth NMN Pro (US, Uthever®)
250–500 mg/day, third-party HPLC testing, sustained-release tablet. An S candidate once Self-GRAS and GLP documentation is verified
78/100
Criteria met
+Uses a clinically studied ingredient brand (Uthever®)
+Publishes third-party HPLC results
Unverified or unmet
−Price pending confirmation — per-100 mg cost not calculable (listed around $50–70/month)
−Dose varies by line, so conversion is needed
B
Double Wood NMN (US)
250 mg/day, purity 97%+ (below 99%), COA published — budget tier
61/100
Criteria met
+Publishes a COA, so verification is possible
+Meets the 250 mg studied dose
+Accessible price
Unverified or unmet
−Purity of 97%+ falls short of the 99% standard
−No named ingredient brand
C
Unbranded import / marketplace NMN
No COA, undisclosed purity and sourcing — a category where US market surveys report under-dosing and adulteration
10/100
Criteria met
—
Unverified or unmet
−Purity and testing undisclosed, so verification is impossible
−Headline-number marketing makes daily dose hard to convert
What was this scored on?
① Effective dose 30
Does the actual daily intake reach the dose range used in human studies — not the number in the product name?
② Purity & impurity testing 25
Published purity figures plus third-party COA, with verifiable impurity and heavy-metal testing.
③ Manufacturing & safety certification 20
cGMP/FDA-registered facilities, ingredient-specific certifications (Self-GRAS, NSF), and toxicology data (GLP).
④ Raw-material grade 15
Named ingredient brand — whether a verified supplier such as Creapure®, Uthever® or Setria® is used.
⑤ Information transparency 10
Full ingredient and dose disclosure, convertible labelling, and claims free of exaggeration.
Independence: This site is operated by KNI. Every product is scored against the same public criteria, and advertising or affiliate arrangements play no part in grading. KNI does not sell supplements. Grades reflect KNI's own published criteria and are not a government or accreditation-body certification.
