Best sources ranked · 2026

Best Glutathione Sources

39 US vendors carry Glutathione. Ordered below by the lab-rule score of each vendor’s certificate for Glutathione, then by the vendor’s published score; prices are per milligram. An endogenous tripeptide (glutamate-cysteine-glycine) present in most living cells. Sold for laboratory research use only.

Reviewed by the Peptide Source Review teamLast audited How we rate

Vendors
39

Vendors

With COAs
22

With COAs

Best $/mg
$0.01

Best $/mg

Every Glutathione source, by certificate

Ordered by the lab-rule score of each vendor's certificate for this product (out of 10), then by the vendor's published score, then alphabetically. How the lab rule scores a certificate. For the market-wide picture, see our 2026 study of peptide vendor testing.

Affiliate links: we may earn a commission if you buy. It never changes a score or rank.

1S1Research
9.5/103 base, +2 Freedom Diagnostics Testing tier A, +1.5 key, +1.5 key confirmed, +0.5 endotoxin, +0.5 sterility, +0.5 purity 99.78certificate

Vendor score 7.75/10Strong

Verified (opens in new tab)Freedom Diagnostics TestingTier A
Price per mg
$0.02
Best price
$36.00 / 1500mg
Shop S1Research → (opens in new tab)
2Pacific Edge Labs
9.5/103 base, +2 Freedom Diagnostics Testing tier A, +1.5 key, +1.5 key confirmed, +0.5 endotoxin, +0.5 sterility, +0.5 purity 99.75certificate

Vendor score 7.15/10Strong

Verified (opens in new tab)Freedom Diagnostics TestingTier A
Price per mg
$0.06
Best price
$84.95 / 1500mg
Shop Pacific Edge Labs → (opens in new tab)
3Amino Club
9.0/103 base, +2 ILS Laboratories tier B+, +1.5 key, +1.5 key confirmed, +0.5 endotoxin, +0.5 sterility, 0 purity 99.41certificate

Vendor score 8.02/10Strong

Verified (opens in new tab)ILS LaboratoriesTier B+
Price per mg
$0.04
Best price
$59.99 / 1500mg
Shop Amino Club → (opens in new tab)
4Prime Peptides
9.0/103 base, +2 Bioviridian tier A-, +1.5 key, +1.5 key confirmed, +0.5 endotoxin, +0.5 purity 99.8certificate

Vendor score 7.94/10Strong

Verified (opens in new tab)BioviridianTier A-
Price per mg
$0.05
Best price
$80.00 / 1500mg
Shop Prime Peptides → (opens in new tab)
5Bluum Peptides
9.0/103 base, +2 Freedom Diagnostics Testing tier A, +1.5 key, +1.5 key confirmed, +0.5 sterility, +0.5 purity 99.71certificate

Vendor score 7.37/10Strong

Verified (opens in new tab)Freedom Diagnostics TestingTier A
Price per mg
$0.04
Best price
$59.00 / 1500mg
Shop Bluum Peptides → (opens in new tab)
6Limitless Biotech
9.0/103 base, +2 MZ Biolabs tier A, +1.5 key, +1.5 key confirmed, +0.5 endotoxin, +0.5 sterility, 0 purity 99.14certificate

Vendor score 6.97/10Fair

Verified (opens in new tab)MZ BiolabsTier A
Price per mg
$0.14
Best price
$69.99 / 500mg
Shop Limitless Biotech → (opens in new tab)
7VoriLabs
9.0/103 base, +2 Freedom Diagnostics Testing tier A, +1.5 key, +1.5 key confirmed, +0.5 endotoxin, +0.5 purity 99.97certificate

Vendor score 6.87/10Fair

Verified (opens in new tab)Freedom Diagnostics TestingTier A
Price per mg
$0.05
Best price
$68.99 / 1500mg
Shop VoriLabs → (opens in new tab)
8DAAVY Research
8.5/103 base, +2 Bioviridian tier A-, +1.5 key, +1.5 key confirmed, +0.5 purity 99.84certificate

Vendor score 8.01/10Strong

Verified (opens in new tab)BioviridianTier A-
Price per mg
$0.04
Best price
$58.00 / 1500mg
Shop DAAVY Research → (opens in new tab)
9Luv Aminos
8.5/103 base, +2 Freedom Diagnostics Testing tier A, +1.5 key, +1.5 key confirmed, +0.5 purity 99.96certificate

Vendor score 7.90/10Strong

Verified (opens in new tab)Freedom Diagnostics TestingTier A
Price per mg
$0.04
Best price
$55.00 / 1500mg
Shop Luv Aminos → (opens in new tab)
10Direct Peptides
8.5/103 base, +2 Horizon Analytical tier A-, +1.5 key, +1.5 key confirmed, +0.5 endotoxin, 0 purity 99.66certificate

Vendor score 7.43/10Strong

Verified (opens in new tab)Horizon AnalyticalTier A-
Price per mg
$0.12
Best price
$59.00 / 500mg
Shop Direct Peptides → (opens in new tab)
Show 29 more carriers
11Kyreon
8.5/103 base, +2 Freedom Diagnostics Testing tier A, +1.5 key, +1.5 key confirmed, +0.5 purity 99.96certificate

Vendor score 7.29/10Strong

Verified (opens in new tab)Freedom Diagnostics TestingTier A
Price per mg
$0.04
Best price
$59.00 / 1500mg
12Rogue Compounds
8.5/103 base, +2 Vanguard Laboratory tier B+, +1.5 key, +1.5 key confirmed, +0.5 purity 99.8certificate

Vendor score 6.88/10Fair

Verified (opens in new tab)Vanguard LaboratoryTier B+
Price per mg
$0.04
Best price
$64.99 / 1500mg
Shop Rogue Compounds → (opens in new tab)
13Peptyes
8.5/103 base, +2 Horizon Analytical tier A-, +1.5 key, +1.5 key confirmed, +0.5 endotoxin, 0 purity 99.54certificate

Vendor score 6.55/10Fair

Verified (opens in new tab)Horizon AnalyticalTier A-
Price per mg
$0.11
Best price
$54.00 / 500mg
Shop Peptyes → (opens in new tab)
14NextSelf Labs
8.5/103 base, +2 Freedom Diagnostics Testing tier A, +1.5 key, +1.5 key confirmed, +0.5 purity 99.79certificate

Vendor score 6.26/10Fair

Verified (opens in new tab)Freedom Diagnostics TestingTier A
Price per mg
$0.04
Best price
$59.99 / 1500mg
Shop NextSelf Labs → (opens in new tab)
15Peptide Pro
8.5/103 base, +2 Bioviridian tier A-, +1.5 key, +1.5 key confirmed, +0.5 purity 99.8certificate

Vendor score 5.60/10Fair

Verified (opens in new tab)BioviridianTier A-
Price per mg
$0.14
Best price
$84.15 / 600mg
Shop Peptide Pro → (opens in new tab)
16Swiss Chems
8.5/103 base, +2 Freedom Diagnostics Testing tier A, +1.5 key, +1.5 key confirmed, +0.5 purity 99.74certificate

Vendor score 5.39/10Weak

Verified (opens in new tab)Freedom Diagnostics TestingTier A
Price per mg
—
Best price
—
Shop Swiss Chems → (opens in new tab)
17StudzPeptides
8.0/103 base, +2 Vanguard Laboratory tier B+, +1.5 key, +1.5 key confirmed, no purity figurecertificate

Vendor score 6.99/10Fair

Verified (opens in new tab)Vanguard LaboratoryTier B+
Price per mg
$0.01
Best price
$129.99 / 20000mg
Shop StudzPeptides → (opens in new tab)
18AminoVault
7.0/103 base, +2 ILS Laboratories tier B+, +1.5 key, +1.5 key confirmed, +0.5 endotoxin, -1.5 purity 98.89certificate

Vendor score 5.78/10Fair

Verified (opens in new tab)ILS LaboratoriesTier B+
Price per mg
$0.05
Best price
$67.58 / 1500mg
Shop AminoVault → (opens in new tab)
19JD BioWorks
6.5/103 base, +2 ILS Laboratories tier B+, +1.5 key, +1.5 key confirmed, -1.5 purity 97.06certificate

Vendor score 6.34/10Fair

Verified (opens in new tab)ILS LaboratoriesTier B+
Price per mg
$0.04
Best price
$54.95 / 1500mg
Shop JD BioWorks → (opens in new tab)
20GhostLabz
6.5/103 base, +2 ILS Laboratories tier B+, +1.5 key, +1.5 key confirmed, -1.5 purity 97.57certificate

Vendor score 6.14/10Fair

Verified (opens in new tab)ILS LaboratoriesTier B+
Price per mg
$0.07
Best price
$39.99 / 600mg
Shop GhostLabz → (opens in new tab)
21Vyal Labs
5.5/103 base, +2 Accurate Test Lab tier B-, +0.5 endotoxin, 0 purity 99.23certificate

Vendor score 4.70/10Weak

View (opens in new tab)Accurate Test LabTier B-
Price per mg
$0.20
Best price
$99.00 / 500mg
Shop Vyal Labs → (opens in new tab)
22Based Research
5.0/103 base, +0 Analytical Formulations tier C, +1.5 key, +0.5 purity 99.8certificate

Vendor score 4.54/10Weak

View (opens in new tab)Analytical FormulationsTier C
Price per mg
$0.10
Best price
$150.00 / 1500mg
Shop Based Research → (opens in new tab)
23Redline Bio Labs
2.0/10SteriGenix Analytical tier D: independence not established = 2.0 flatcertificate

Vendor score 4.80/10Weak

Vendor report (lab not established) (opens in new tab)SteriGenix AnalyticalTier D
Price per mg
$0.04
Best price
$58.00 / 1500mg
Shop Redline Bio Labs → (opens in new tab)
24Prism Labs
2.0/10Proof Point Analytical tier D: independence not established = 2.0 flatcertificate

Vendor score 3.92/10Poor

Vendor report (lab not established) (opens in new tab)Proof Point AnalyticalTier D
Price per mg
$0.06
Best price
$34.99 / 600mg
Shop Prism Labs → (opens in new tab)
25Peptara Labs
2.0/10Titreon Analytical tier D: independence not established = 2.0 flatcertificate

Vendor score 2.38/10Poor

Vendor report (lab not established) (opens in new tab)Titreon AnalyticalTier D
Price per mg
$0.16
Best price
$95.00 / 600mg
Shop Peptara Labs → (opens in new tab)
26Southern Aminos
0.0/10no certificatecertificate

Vendor score 8.09/10Strong

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.03
Best price
$52.00 / 1500mg
Shop Southern Aminos → (opens in new tab)
27Arctic Lab Supply
0.0/10no certificatecertificate

Vendor score 6.98/10Fair

NoneNo third-party COA was publicly available at audit time
Price per mg
—
Best price
—
Shop Arctic Lab Supply → (opens in new tab)
28Hacker Peptides
0.0/10no certificatecertificate

Vendor score 6.32/10Fair

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.02
Best price
$28.75 / 1200mg
Shop Hacker Peptides → (opens in new tab)
29Bionova Peptides
0.0/10no certificatecertificate

Vendor score 6.03/10Fair

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.03
Best price
$39.99 / 1500mg
Shop Bionova Peptides → (opens in new tab)
30NextGen Peps
0.0/10no certificatecertificate

Vendor score 5.95/10Fair

NoneNo third-party COA was publicly available at audit time
Price per mg
Out of stock
Best price
—
Shop NextGen Peps → (opens in new tab)
31Vortex Research
0.0/10no certificatecertificate

Vendor score 5.50/10Fair

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.04
Best price
$55.00 / 1500mg
Shop Vortex Research → (opens in new tab)
32Delix Labs
0.0/10no certificatecertificate

Vendor score 4.58/10Weak

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.11
Best price
$80.00 / 750mg
Shop Delix Labs → (opens in new tab)
33Lotus Peptide
0.0/10no certificatecertificate

Vendor score 3.68/10Poor

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.05
Best price
$30.00 / 600mg
Shop Lotus Peptide → (opens in new tab)
34Pexo Labs
0.0/10no certificatecertificate

Vendor score 3.63/10Poor

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.04
Best price
$56.99 / 1500mg
Shop Pexo Labs → (opens in new tab)
35Drexa Labs
0.0/10no certificatecertificate

Vendor score 3.23/10Poor

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.05
Best price
$69.00 / 1500mg
Shop Drexa Labs → (opens in new tab)
36YourFitnessPeptides
0.0/10no certificatecertificate

Vendor score 2.75/10Poor

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.03
Best price
$51.49 / 1500mg
Shop YourFitnessPeptides → (opens in new tab)
37Peptide Warehouse US
0.0/10no certificatecertificate

Vendor score 2.46/10Poor

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.07
Best price
$400.00 / 10 x 600mg pack
Shop Peptide Warehouse US → (opens in new tab)
38Welon Peptide Solutions
0.0/10no certificatecertificate

Vendor score 2.13/10Poor

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.01
Best price
$104.00 / 10 x 1500mg pack
Shop Welon Peptide Solutions → (opens in new tab)
39Medura Peptides
0.0/10no certificatecertificate

Vendor score 1.63/10Poor

NoneNo third-party COA was publicly available at audit time
Price per mg
$0.06
Best price
$89.99 / 1500mg
Shop Medura Peptides → (opens in new tab)

“Shop” links may be affiliate links (rel="sponsored"); we may earn a commission. Affiliate status never affects any rating, rank, or gate. Disclosure.

Affiliate partners carrying Glutathione

Affiliate links: we may earn a commission if you buy. It never changes a score or rank.

Highest-placed partner

Amino Club9.0/10 certificate

The highest-placed affiliate partner in the table above for Glutathione: certificate 9.0/10, vendor score 8.02/10.

Shop Amino Club → (opens in new tab)

Largest partner reader code

Arctic Lab Supply25% off

The largest reader discount among our affiliate partners carrying Glutathione: 25% off with code PSRINFO.

Shop Arctic Lab Supply → (opens in new tab)
Arctic Lab Supply discount code →

Glutathione: Frequently Asked Questions

Who has the best Glutathione?

In our 2026 audit, S1Research is listed first for Glutathione: its certificate for Glutathione scores 9.5/10 on our lab rule, and its published vendor score is 7.75/10. The full ordered table is on this page.

What is the cheapest Glutathione per mg?

The lowest recorded price per milligram for Glutathione in our audit is the "Best $/mg" figure at the top of this page, and every carrier's price per mg is in the table. Cheapest is not the same as best: the table is ordered by certificate and vendor score, not by price.

How do you rate Glutathione vendors?

Ordered by the lab-rule score of each vendor's certificate for this product (out of 10), then by the vendor's published score, then alphabetically. The certificate score is the same lab rule that builds each vendor's lab sub-score, applied to that vendor's certificate for Glutathione; the vendor score is the published overall score. Price per mg is shown but does not change the order. See our methodology for the lab rule.

Also available at these peptide pages

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