Search peptides — top sellers first
Search peptides — top sellers first
Search peptides — top sellers first
The cell's master antioxidant — thousands of studies deep
Made in USA — Synthesized in our cGMP-compliant US facility
Buy 1, Get 1 Free · auto-applied
Add 2+ items to cart to activate the discount
Secure, encrypted checkout
Frequently bought together
Researchers usually add these to complete the protocol.
BAC Water · 3ml
Essential · extras
GHK-CU · 50mg
recovery
Melanotan 2 · 10mg
Tanning
L-Glutathione · 1,500mg
Certificate of analysis
We don't publish a brand-wide spec sheet and call it a “COA.” The certificate you receive references the actual lot number stamped on your vial — with the raw chromatograms attached.
Freedom Diagnostics
Independent analytical lab
Certificate of Analysis
RESULT · PASS
Analytical results
HPLC Chromatogram
Main peak 99.73% · other 0.27%
Alex Johnson
Principal Chemist
Scanned 47×
Know your compound
L-Glutathione is a tiny protein built from three amino acids that acts as the cell's main defense against damage. It's the most abundant antioxidant found inside human cells, and it's central to how the body clears toxins.
What draws researchers is how consistently glutathione runs low wherever things go wrong — its levels drop with age and fall across nearly every chronic disease process studied. That link between depletion and damage has made it one of the most-cited molecules in redox biology, the study of how cells handle oxidation.
For research use only — not for human or veterinary use.
The research
The published findings behind this compound — the headline numbers, in plain terms, each cited to source. Preclinical results are directional (animal / in-vitro) and shown for context, not as therapeutic claims.
In bladder cancer cells, stripping away glutathione defenses (alongside FTH1 knockdown) switched on ferroptosis — an iron-driven form of cell death — while control cells stayed alive.
Directional finding — bars show relative effect, not measured percentages.
In gastric cancer models, low-oxygen signaling shielded tumor cells from ferroptosis by leaning on the glutathione pathway — and blocking that signaling restored the oxidative cell death.
Directional — heights illustrate the reported shift, not measured values.
In mice, a gut bacterium (Bacteroides acidifaciens) buffered CD95-driven liver injury through a glutathione-linked protective pathway.
Directional finding — bars show relative liver damage, not measured percentages.
In worms, exposure to the tire-derived toxin 6-PPD quinone flipped on ferroptosis and reproductive harm — with glutathione and redox balance implicated in the disrupted pathway.
Directional — heights illustrate the reported shift, not measured values.
Mechanism
A master antioxidant studied across the redox routes that keep cells intact under stress.
Studied for neutralizing the oxidative stress that damages cells and proteins.
Investigated for regulating ferroptosis, an iron-dependent form of cell death.
Researched for protecting the liver and supporting its handling of toxins.
For research use only. Mechanisms described reflect published research literature.
The process
Synthesized
Produced under controlled manufacturing with documented, repeatable processes.
HPLC purity
An independent lab reports the exact purity of every lot — a number, never a 'passes'.
Mass-spec identity
Molecular weight confirms the exact sequence is what the label says.
COA published
The certificate is posted to the open library, by lot, before the vial ships.
Best sellers
FAQ
Common questions about L-Glutathione
The COA guarantee
Have any lot independently re-tested. If the results don't match the published certificate, we refund the order in full — no returns, no questions.
Order with coverThird-party tested
An independent, accredited lab — no commercial interest in the result.
A COA on every lot
A lot-specific certificate ships with each vial, archived by batch.
Test it yourself → refund
Re-test any batch at any lab. A mismatch is a full refund.
