Which vendors sell Glutathione with independent COA testing?

32 vendors in the Merit Verified directory have independent COA evidence on file for Glutathione — 121 COAs total. COA coverage and test dates are listed on the Glutathione page at https://meritverified.org/peptides/glutathione.

How do I verify the quality of Glutathione from a vendor?

To verify Glutathione quality, look for an independent certificate of analysis (COA) from a third-party lab — not a lab the vendor owns or pays directly. The COA should state the tested compound, lot number, purity percentage (identity and concentration), and the lab's name. Cross-reference the lot number against the vendor's current stock. Merit Verified indexes COAs for Glutathione at https://meritverified.org/peptides/glutathione so you can compare evidence across vendors before buying.

What is the regulatory status of Glutathione?

Glutathione is tracked in the Merit Verified registry. Regulatory status for research peptides in the US has been evolving — the FDA has reclassified a number of peptides out of the 503A compounding ingredient list since 2025. Merit Verified does not provide legal or regulatory advice; check official FDA sources or consult a licensed professional for the current status of Glutathione in your jurisdiction.

Immune Modulator

Glutathione

Also known as: GSH

Glutathione is an endogenous tripeptide (gamma-L-glutamyl-L-cysteinyl-glycine) that serves as the principal intracellular antioxidant in mammalian cells. It is not FDA-approved as a drug in the US; parenteral glutathione is used off-label (and in some compounding settings) for oxidative stress, hepatic support, and — controversially — skin lightening. The FDA has warned against injectable glutathione for skin lightening (2019) due to reports of serious adverse events.

Where to buy · live market data

Who's worth your money for Glutathione

Every current seller, ranked by independent evidence — Merit Score, latest COA purity, and live $/mg (size-normalized). Prices refresh daily. Rankings are never paid.

Top Merit pick

🇺🇸 Glacier Aminos 99

Highest Merit Score (99) of 31 scored sellers

$0.05/mg

$75.99 · 1500mg · 99.9% purity

6 COAs

Buy Code MERIT · 10% off

Best value after code

S1 Research 37

$0.02/mg effective with 10% code

$0.02/mg

$36.00 · 1500mg

no COAs yet

Buy Code merit · 10% off

Most tested

🇺🇸 Verified Peptides 86

10 independent COAs on file

$0.05/mg

$79.99 · 1500mg · 98.5% purity

10 COAs

Buy

Average price

$0.05/mg

range $0.01–$0.15/mg

Sellers

from $34.00

45-day trend

-18.9%

vs 45-day avg $/mg

44 of 59 sellers have a current price· 3 stale hidden· 10 unverified hidden

	Vendor	Price	$/mg	vs avg	Purity	COAs	Merit
🇺🇸	Glacier Aminos ✓ verified at source · 1h ago	$75.99· 1500mg	$0.05/mg	-4.2%	99.9%	6	99	Buy Code MERIT · 10% off
🇺🇸	Peptide Partners ✓ verified at source · 3d ago	$92.00· 1500mg	$0.06/mg	+15.9%	—	—	99	Buy
🇺🇸	Hydro Research Peptides ✓ verified at source · just now	$95.00· 1500mg	$0.06/mg	+19.7%	99.2%	2	97	Buy Code MERIT · 15% off
🇺🇸	Prime Peptides ✓ verified at source · just now	$80.00· 1500mg	$0.05/mg	+0.8%	99.8%	1	96	Buy
🇺🇸	Orbitrex Peptides via Disclosed Labs · 5d ago · stale	$59.99· 1500mg	$0.04/mg	-24.4%	99.7%	2	95	Buy Code Orbitrex10 · 10% off
🇺🇸	Sunrise Bioresearch ✓ verified at source · just now	$150· 1200mg	$0.13/mg	+136.3%	99.3%	4	95	Buy
🇺🇸	Licensed Peptides ✓ verified at source · just now	$91.99· 600mg	$0.15/mg	+189.8%	99.8%	1	95	Buy Code MERIT · 5% off
🇺🇸	Forge Performance Co. via Disclosed Labs · 5d ago · stale	$60.00· 1500mg	$0.04/mg	-24.4%	—	—	94	Buy Code MERIT · 10% off
🇺🇸	Certified Peptides ✓ verified at source · 1h ago	$90.00· 1500mg	$0.06/mg	+13.4%	99.5%	2	94	Buy
	Nova Peptides ✓ verified at source · 1h ago	$49.99· 600mg	$0.08/mg	+57.5%	99.0%	2	94	Buy

Top Merit pick

🇺🇸 Glacier Aminos
✓ verified at source · 1h ago
99

$0.05/mg -4.2% vs avg

$75.99

1500mg

99.9% purity 6 COAs

Buy Code MERIT · 10% off
🇺🇸 Peptide Partners
✓ verified at source · 3d ago
99

$0.06/mg +15.9% vs avg

$92.00

1500mg

no purity

Buy
🇺🇸 Hydro Research Peptides
✓ verified at source · just now
97

$0.06/mg +19.7% vs avg

$95.00

1500mg

99.2% purity 2 COAs

Buy Code MERIT · 15% off
🇺🇸 Prime Peptides
✓ verified at source · just now
96

$0.05/mg +0.8% vs avg

$80.00

1500mg

99.8% purity 1 COA

Buy
🇺🇸 Orbitrex Peptides
via Disclosed Labs · 5d ago · stale
95

$0.04/mg -24.4% vs avg

$59.99

1500mg

99.7% purity 2 COAs

Buy Code Orbitrex10 · 10% off
🇺🇸 Sunrise Bioresearch
✓ verified at source · just now
95

$0.13/mg +136.3% vs avg

$150

1200mg

99.3% purity 4 COAs

Buy
🇺🇸 Licensed Peptides
✓ verified at source · just now
95

$0.15/mg +189.8% vs avg

$91.99

600mg

99.8% purity 1 COA

Buy Code MERIT · 5% off
🇺🇸 Forge Performance Co.
via Disclosed Labs · 5d ago · stale
94

$0.04/mg -24.4% vs avg

$60.00

1500mg

no purity

Buy Code MERIT · 10% off
🇺🇸 Certified Peptides
✓ verified at source · 1h ago
94

$0.06/mg +13.4% vs avg

$90.00

1500mg

99.5% purity 2 COAs

Buy
Nova Peptides
✓ verified at source · 1h ago
94

$0.08/mg +57.5% vs avg

$49.99

600mg

99.0% purity 2 COAs

Buy

Prices observed from public storefronts (last 24h), normalized to $/mg. "Evidence" is Merit's 0–100 Merit Score, derived only from observable verification evidence (methodology on /about); "Purity" is the latest independent COA. Some buy links are affiliate links — Merit may earn a commission at no extra cost to you, and where a vendor offers one, the code shown gets you a discount at their checkout. Affiliate status never affects price data, ranking, or the Merit Score (full policy on /disclosure). Research use only.

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Compound reference

About Glutathione

CAS

70-18-8

Molecular formula

C10H17N3O6S

Sequence

ECG

Typical dose range

IV: 600–1200 mg per session (1–3x/week); oral: 250–500 mg/day

Half-life

~10–14 minutes (plasma, IV); cellular retention 24–72 hours post-dose

Independent evidence

COAs for Glutathione

121 third-party tests across 32 vendors. Each card links to the full report.

All 121 COAs for Glutathione →

Measured purity over time

✓ Vendor-published

99.80 %

Sep 2026

Vanguard Laboratory Strong

For

Glutathione

by Licensed Peptides· batch White

Glutathione

Who's worth your money for Glutathione

Watch Glutathione

About Glutathione

COAs for Glutathione

20 citations indexed for Glutathione

AA-Induced Lipid Peroxidation at the Center of Tumor Cell Apoptosis and Ferroptosis

Rethinking hyperhomocysteinemia: from causal risk factor to biomarker of glutathione deficiency in chronic diseases

Concurrent erythrocyte glutathione depletion and oxidative shift of the serum thiol-disulfide pool in acute pancreatitis: a case-control study

Skin Lightening and Evenness Effects of Oral Supplementation With S‐Acetyl Glutathione in Comparison With Reduced Glutathione: A Double‐Blind, Placebo‐Controlled Clinical Trial

Evidence on Glutathione and Boosters for Prevention of Chemotherapy-Induced Neuropathy: A Systematic Review and Network Meta-Analysis

Structural and functional analysis of the bifunctional thioredoxin glutathione reductase -TGR- from the white shrimp Penaeus vannamei, and redox responses under hypoxia