What is L-Glutathione?

L-Glutathione is a tripeptide (gamma-glutamyl-cysteinyl-glycine) supplied as a lyophilised powder. It is supplied strictly for laboratory research use only.

What research area is L-Glutathione associated with?

Published preclinical laboratory work in this class concerns redox chemistry and thiol-dependent enzyme systems in vitro. We supply the material only; we make no representation as to any outcome, effect, or suitability for any purpose.

Is L-Glutathione approved for human use?

No. L-Glutathione is not a drug, supplement, food, cosmetic, or medical device, and has no approved human or veterinary indication. It is sold strictly for in-vitro laboratory research use by qualified professionals.

What purity is L-Glutathione supplied at, and how is it verified?

Each lot is assayed by HPLC and ships with its own lot-specific Certificate of Analysis, published in our COA registry. Purity figures are stated per lot - we do not publish a brand-wide specification in place of the actual certificate.

L-Glutathione

Tripeptide redox research material, supplied for laboratory research use only.

99.31% pure on this exact lot, verified by an independent lab, not by us
Tested in the USA. Ships within 1 business day, stored frozen, stable at room temperature until you mix it
Retest it at any lab. If it doesn't match our report, every dollar back

$99/ 1,500mg vial

$49.50 per vial with Buy 1, Get 1 Free

Buy 1, Get 1 Free· add 2, applied automatically

99.31% pure on this exact lot, verified by an independent lab, not by us
Tested in the USA. Ships within 1 business day, stored frozen, stable at room temperature until you mix it
Retest it at any lab. If it doesn't match our report, every dollar back

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All products currently listed on this site are for research purposes only.

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Proof, not promises. Every batch, tested by an outside lab.

Every batch of L-Glutathione is tested by an outside lab before it goes on sale — not by us. The one shipping now is lot GTT1500-WM2607-001: 99.31% pure by HPLC, tested by Accurate Lab Tests on 20 Aug 2026. The signed report is right here. Purity is the number the lab measured, never “at least 99” — and a batch that misses its spec never ships.

L-Glutathione · 1,500mgLot GTT1500-WM2607-001Live batch data

Purity99.31%

Passed

Tested by: Accurate Lab Tests
Tested on: 20 Aug 2026
Net content: 1506.82 mg

Contaminant screens

Heavy metalsEndotoxinsMicrobialSolvents

See all lab reports

What happens before a vial reaches you

1Made in a controlled facilityDocumented, repeatable steps for every batch.
2Purity testedAn outside lab measures it and reports the exact number.
3Identity confirmedA second test proves it is what the label says.
4Report publishedSigned, filed by lot number, and public before the vial ships.

Live batch data

Accurate Lab Tests

Independent analytical lab

Certificate of Analysis

RESULT · PASS

Lot GTT1500-WM2607-001Verified

L-Glutathione 1,500mg

HPLC purity

99.31%

Pass · Meets spec

Tested

20 Aug 2026

HPLC-UV + LC-MS

Analytical results

Identity (LC-MS)ConfirmedPASS

Net content1506.82 mgPASS

HPLC Chromatogram

Main peak 99.31% · other 0.69%

Alex JohnsonPrincipal Chemist

Authentichain

Redox balanceantioxidant

Ferroptosiscell-death control

Liver defensedetox

How L-Glutathione works

A master antioxidant studied across the redox routes that keep cells intact under stress.

Redox balanceantioxidant

Studied for neutralizing the oxidative stress that damages cells and proteins.

Ferroptosiscell-death control

Investigated for regulating ferroptosis, an iron-dependent form of cell death.

Liver defensedetox

Researched for protecting the liver and supporting its handling of toxins.

For research use only. Mechanisms described reflect published research literature.

Every batch we've tested

Anyone can show you one good report. Here is every batch of L-Glutathione we have ever released, newest first, each with its own signed report. Nothing hidden, nothing cherry-picked.

3 batches on record · latest tested 20 Aug 2026

All lab reportsEvery L-Glutathione batch, on one page.The full testing history with every signed report. No login, no email wall.See all lab reports

What the studies found

Published findings on this compound, each linked to its source. Animal and lab results are context, not claims about this product.

Redox defencePreclinical

Glutathione is the most abundant small sulfur-containing molecule cells make. Reviews describe it protecting cells from oxidative damage and reactive chemicals, and holding the cell's redox balance steady.

vs untreated controls

Molecular Aspects of Medicine 2009 · review

Glutathionemain redox buffer

Other thiolslower abundance

Described in review literature as the most abundant small sulfur-containing molecule cells make.

Detox conjugationPreclinical

In mammals, a family of enzymes called glutathione transferases uses glutathione to neutralise reactive chemicals — pollutants and carcinogens from outside, plus damaging by-products the cell makes under oxidative stress.

in gastric cancer models

Directional — heights illustrate the reported shift, not measured values.

Annual Review of Pharmacology and Toxicology 2005 · review (mammalian)

A deep reservePreclinical

~3%

In mice given a drug that blocks glutathione synthesis, muscle mitochondria were only damaged once glutathione fell to roughly 3% of normal — which the authors read as a large built-in reserve.

vs unprotected mice

Normal levelsmitochondria unaffected

Depleted to ~3%damage appears

Skeletal-muscle mitochondria in mice after synthesis blockade.

Proceedings of the National Academy of Sciences 1989 · preclinical (mice)

Full research: Glutathione: Real Biochemistry, Contested Supplement