Scored on the same 100-point, five-axis rubric. Named listings are limited to overseas brands and top-tier domestic products with publicly verifiable evidence; 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 250mg / Men 250mg
Days of supplyWomen / Men
S
Pure Encapsulations Liposomal Glutathione
Setria® raw material with a liposomal 250 mg design — sourcing, absorption and dose all covered
Strong liposomal liquid technology, but no ingredient brand named
Cost per active unit
Not calculable
Daily cost · Women 250mg
—
Daily cost · Men 250mg
—
Days of supply · Women / Men
—
Axis scores
Effective dose
26/30
Purity & impurity testing
18/25
Manufacturing & safety certification
15/20
Raw-material grade
5/15
Information transparency
8/10
Retailer link pending
A
72/100
Jarrow Reduced Glutathione 500 mg
Reduced form, high dose, sensible price; absorption design limited to an enteric capsule
Cost per active unit
Not calculable
Daily cost · Women 250mg
—
Daily cost · Men 250mg
—
Days of supply · Women / Men
—
Axis scores
Effective dose
30/30
Purity & impurity testing
16/25
Manufacturing & safety certification
13/20
Raw-material grade
5/15
Information transparency
8/10
Retailer link pending
B
55/100
Generic GSH tablets (unbranded import)
Dose is labelled, but there is no sourcing or absorption design
Cost per active unit
Not calculable
Daily cost · Women 250mg
—
Daily cost · Men 250mg
—
Days of supply · Women / Men
—
Axis scores
Effective dose
26/30
Purity & impurity testing
10/25
Manufacturing & safety certification
12/20
Raw-material grade
0/15
Information transparency
7/10
—C
13/100
"Contains glutathione" gummies, jellies and drinks
Actual GSH content undisclosed — marketing language only, cost not calculable
Cost per active unit
Not calculable
Daily cost · Women 250mg
—
Daily cost · Men 250mg
—
Days of supply · Women / Men
—
Axis scores
Effective dose
5/30
Purity & impurity testing
0/25
Manufacturing & safety certification
6/20
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
Pure Encapsulations Liposomal Glutathione
28
22
17
15
9
Quicksilver Scientific Liposomal
26
18
15
5
8
Jarrow Reduced Glutathione 500 mg
30
16
13
5
8
Generic GSH tablets (unbranded import)
26
10
12
0
7
"Contains glutathione" gummies, jellies and drinks
5
0
6
0
2
Pure Encapsulations Liposomal Glutathione
① Effective dose
28/30
② Purity & impurity testing
22/25
③ Manufacturing & safety certification
17/20
④ Raw-material grade
15/15
⑤ Information transparency
9/10
Quicksilver Scientific Liposomal
① Effective dose
26/30
② Purity & impurity testing
18/25
③ Manufacturing & safety certification
15/20
④ Raw-material grade
5/15
⑤ Information transparency
8/10
Jarrow Reduced Glutathione 500 mg
① Effective dose
30/30
② Purity & impurity testing
16/25
③ Manufacturing & safety certification
13/20
④ Raw-material grade
5/15
⑤ Information transparency
8/10
Generic GSH tablets (unbranded import)
① Effective dose
26/30
② Purity & impurity testing
10/25
③ Manufacturing & safety certification
12/20
④ Raw-material grade
0/15
⑤ Information transparency
7/10
"Contains glutathione" gummies, jellies and drinks
① Effective dose
5/30
② Purity & impurity testing
0/25
③ Manufacturing & safety certification
6/20
④ Raw-material grade
0/15
⑤ Information transparency
2/10
How these are calculated
Cost per active unit = price ÷ total active content · Daily cost = cost per unit × daily dose · Days of supply = total active content ÷ daily dose
Unit costs are converted from the purchase option listed at the official retailer. Where the basis is not a single unit, that option is stated beneath the figure — costs on different bases are not directly comparable.
Days of supply is not how long an effect lasts — it is how many days one pack covers at the daily dose used here. Nor is it the number of sticks or tablets in a pack: when the daily dose exceeds one serving, a 30-stick pack lasts fewer than 30 days.
Daily dose used — Women 250mg · Men 250mg. 250 mg for both = the lower bound of the 250–500 mg range used in human studies. There is no evidence for a sex-based difference, so the same figure is used.
All named products in this table are made in the US and sold via cross-border purchase. Named listings are limited to overseas brands and to top-tier (S/A) domestic products whose evidence — ingredient brand, certifications and test reports — is publicly verifiable. All other domestic products appear as a category. Third-party product links earn no affiliate commission. KNI and EGA share ownership and management; purchases do not change the published scoring criteria. Based on official retailer listings and published test reports · Data as of 2026-08
So which one should you choose?
To summarise — the reduced form stated, GSH content itself rather than yeast extract, an absorption design, a named raw material, and a price you can sustain for 12 weeks.
If you want both absorption design and a documented source —
SPure Encapsulations Liposomal Glutathione
It names Setria® — the raw material used in blood-GSH studies — in a liposomal 250 mg design, the only combination here covering sourcing, absorption and dose at once. It is expensive, so work out the 12-week cost first.
It offers a high 500 mg reduced-form dose at the most accessible price. Absorption design stops at an enteric capsule and there is no named source, so it grades A — but since the skin studies all assume 12+ weeks, sustainability is itself a variable.
Glutathione is not an approved functional ingredient in Korea. The statements above report findings from individual studies and do not imply a whitening effect or a substitute for clinical procedures.
Conflict-of-interest disclosure: KNI and EGA share ownership and management. EGA products are included in our NMN comparisons. We apply the same published criteria to all products; please review the evidence behind EGA's score.
Strengths and limits, product by product
S
Pure Encapsulations Liposomal Glutathione
Setria® raw material with a liposomal 250 mg design — sourcing, absorption and dose all covered
91/100
Criteria met
+Names Setria®, the raw material used in human studies
+Liposomal absorption design
+Meets the 250 mg dose used in skin trials
Unverified or unmet
−Price pending confirmation — per-100 mg cost not calculable (listed around $45–60/month)
−High price makes a 12-week course costly
A
Quicksilver Scientific Liposomal
Strong liposomal liquid technology, but no ingredient brand named
72/100
Criteria met
+Liquid liposomal absorption design
+Reduced form stated
Unverified or unmet
−No named ingredient brand — a deduction on the raw-material axis
−Price pending confirmation (listed around $35–50/month)
A
Jarrow Reduced Glutathione 500 mg
Reduced form, high dose, sensible price; absorption design limited to an enteric capsule
72/100
Criteria met
+High 500 mg reduced-form dose
+Most accessible price
Unverified or unmet
−Simpler absorption design than liposomal
−No named ingredient brand
−Price pending confirmation (listed around $18–28/month)
B
Generic GSH tablets (unbranded import)
Dose is labelled, but there is no sourcing or absorption design
55/100
Criteria met
+The dose itself is stated
Unverified or unmet
−No ingredient brand or absorption design
−Often difficult to confirm whether the form is reduced
C
"Contains glutathione" gummies, jellies and drinks
Actual GSH content undisclosed — marketing language only, cost not calculable
13/100
Criteria met
—
Unverified or unmet
−Actual GSH content undisclosed — you cannot place it against studied doses
−A large share of the product is sugar and other additives
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.
Conflict-of-interest disclosure: KNI and EGA share ownership and management. EGA products are included in our NMN comparisons. We apply the same published criteria to all products; please review the evidence behind EGA's score. KNI grades reflect our own published criteria and are not a government or accreditation-body certification.
