Which vendors sell Glutathione with independent COA testing?

17 vendors in the Merit Verified directory have independent COA evidence on file for Glutathione — 79 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.

Real-time market data

Pricing for Glutathione

Live vendor pricing, normalized to $/mg so sizes compare fairly — fused with each seller's Merit trust score and latest independent COA purity. Prices refresh daily.

Average price

$0.06/mg

range $0.02–$0.30/mg

Sellers

from $0.00

45-day trend

-3.4%

vs 45-day avg $/mg

57 of 65 sellers have a current price· 39 stale listings hidden (not seen in 7 days)

	Vendor	Price	$/mg	vs avg	Purity	COAs	Merit
🇺🇸	Glacier Aminos ✓ verified at source · just now	$75.99· 1500mg	$0.05/mg	-18.8%	99.9%	5	99	Buy code MERIT · 10% off
🇺🇸	Orbitrex Peptides via Disclosed Labs · just now	$59.99· 1500mg	$0.04/mg	-35.9%	99.7%	2	95
🇺🇸	Prime Peptides ✓ verified at source · just now	$65.00· 1500mg	$0.04/mg	-30.6%	99.8%	1	95
🇺🇸	Peptide Tech ✓ verified at source · 1d ago	$69.99· 1500mg	$0.05/mg	-25.2%	—	—	94	Buy
🇺🇸	Hydro Research Peptides via Disclosed Labs · just now	$95.00· 1500mg	$0.06/mg	+1.5%	99.2%	2	91	Buy code MERIT · 15% off
🇺🇸	Peptide Plugs ✓ verified at source · just now	$50.00· 1500mg	$0.03/mg	-46.6%	99.6%	1	89
🇺🇸	Sunrise Bioresearch via Disclosed Labs · just now	$41.44· 1500mg	$0.03/mg	-55.7%	99.3%	4	88
🇺🇸	Verified Peptides via Disclosed Labs · just now	$79.99· 1500mg	$0.05/mg	-14.5%	99.0%	7	86	Buy
🇺🇸	Simple Peptide via Disclosed Labs · just now	$75.00· 1500mg	$0.05/mg	-19.9%	99.7%	3	85	Buy
	Peptide Supply Co. via Disclosed Labs · just now	$350· 15000mg	$0.02/mg	-62.6%	99.0%	2	83
🇨🇳	Reta Peptide ✓ verified at source · just now	$75.00· 1500mg	$0.05/mg	-19.9%	—	—	83
🇺🇸	Blank Peptides ✓ verified at source · just now	$45.00· 600mg	$0.07/mg	+20.2%	99.4%	2	81
🇺🇸	Certified Peptides ✓ verified at source · just now	$90.00· 1500mg	$0.06/mg	-3.8%	—	1	62
🇭🇰	zztai Peptide Ltd ✓ verified at source · just now	$80.00· 1500mg	$0.05/mg	-14.5%	—	—	43
🇺🇸	NG Peptide via Disclosed Labs · just now	$45.00· 1500mg	$0.03/mg	-51.9%	—	—	Unscored
	peptidetech.is via Disclosed Labs · just now	$69.99· 1500mg	$0.05/mg	-25.2%	—	—	Unscored
	optimasupply.is via Disclosed Labs · just now	$95.00· 1500mg	$0.06/mg	+1.5%	—	—	Unscored
	realpeptides.co via Disclosed Labs · just now	$85.00· 600mg	$0.14/mg	+127%	—	—	Unscored

Top Merit pick

🇺🇸 Glacier Aminos
✓ verified at source · just now
99

$0.05/mg -18.8% vs avg

$75.99

1500mg

99.9% purity 5 COAs

Buy code MERIT · 10% off
🇺🇸 Orbitrex Peptides
via Disclosed Labs · just now
95

$0.04/mg -35.9% vs avg

$59.99

1500mg

99.7% purity 2 COAs
🇺🇸 Prime Peptides
✓ verified at source · just now
95

$0.04/mg -30.6% vs avg

$65.00

1500mg

99.8% purity 1 COA
🇺🇸 Peptide Tech
✓ verified at source · 1d ago
94

$0.05/mg -25.2% vs avg

$69.99

1500mg

no purity

Buy
🇺🇸 Hydro Research Peptides
via Disclosed Labs · just now
91

$0.06/mg +1.5% vs avg

$95.00

1500mg

99.2% purity 2 COAs

Buy code MERIT · 15% off
🇺🇸 Peptide Plugs
✓ verified at source · just now
89

$0.03/mg -46.6% vs avg

$50.00

1500mg

99.6% purity 1 COA
🇺🇸 Sunrise Bioresearch
via Disclosed Labs · just now
88

$0.03/mg -55.7% vs avg

$41.44

1500mg

99.3% purity 4 COAs
🇺🇸 Verified Peptides
via Disclosed Labs · just now
86

$0.05/mg -14.5% vs avg

$79.99

1500mg

99.0% purity 7 COAs

Buy
🇺🇸 Simple Peptide
via Disclosed Labs · just now
85

$0.05/mg -19.9% vs avg

$75.00

1500mg

99.7% purity 3 COAs

Buy
Peptide Supply Co.
via Disclosed Labs · just now
83

$0.02/mg -62.6% vs avg

$350

15000mg

99.0% purity 2 COAs
🇨🇳 Reta Peptide
✓ verified at source · just now
83

$0.05/mg -19.9% vs avg

$75.00

1500mg

no purity
🇺🇸 Blank Peptides
✓ verified at source · just now
81

$0.07/mg +20.2% vs avg

$45.00

600mg

99.4% purity 2 COAs
🇺🇸 Certified Peptides
✓ verified at source · just now
62

$0.06/mg -3.8% vs avg

$90.00

1500mg

no purity 1 COA
🇭🇰 zztai Peptide Ltd
✓ verified at source · just now
43

$0.05/mg -14.5% vs avg

$80.00

1500mg

no purity
🇺🇸 NG Peptide
via Disclosed Labs · just now
Unscored

$0.03/mg -51.9% vs avg

$45.00

1500mg

no purity
peptidetech.is
via Disclosed Labs · just now
Unscored

$0.05/mg -25.2% vs avg

$69.99

1500mg

no purity
optimasupply.is
via Disclosed Labs · just now
Unscored

$0.06/mg +1.5% vs avg

$95.00

1500mg

no purity
realpeptides.co
via Disclosed Labs · just now
Unscored

$0.14/mg +127% vs avg

$85.00

600mg

no purity

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.

Independent evidence

COAs for Glutathione

79 third-party tests across 17 vendors. Each card links to the full report.

All 79 COAs for Glutathione →

Measured purity over time

Glutathione

Pricing for Glutathione

COAs for Glutathione

20 citations indexed for Glutathione

Formulation-dependent differences in systemic glutathione availability: Comparative pharmacokinetics of orally dissolving film and tablet formulations in healthy adults

Integrated multi-omics analysis reveals how PdMYB44 enhances drought tolerance in Pugionium dolabratum by activating the ascorbate-glutathione cycle

Delta-Class Glutathione S-Transferase Modulates the Susceptibility of Myzus persicae to λ-Cyhalothrin

Multi-Omics Analysis Reveals Chronic Cisplatin Exposure Is Associated with Metabolic Rewiring Toward Glutathione Metabolism to Support Redox Adaptation in High-Grade Serous Ovarian Cancer

Enhancement of Copper Antiviral Activity with Glutathione Treatment

Metabolic profiling of human melanoma cell lines with high and low metastatic capacity by 1H-NMR spectroscopy