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Glutathione
Pick your pack · how long it lasts
At 2000 mg/wk — select pack size
Lab-direct quality — full packs or single-vial samples
Every batch ships straight from the lab that synthesises it — sealed, tamper-evident, and HPLC-verified to >99% purity with a batch-linked Certificate of Analysis. Buying direct means you pay the lab-direct rate on every vial, with nothing stacked on top.
Order a full sealed 10-vial research pack for a complete study supply, or add a single-vial sample alongside your pack to trial a new compound first. Same lab, same batch, same verified purity — scaled to whatever your research needs.
What It's Researched For
In plain terms, glutathione is the cell’s built-in antioxidant and detox molecule. Here is what that looks like across the research.
Antioxidant defence
Research centres on how it mops up reactive oxygen species and protects cells from oxidative damage — the role that earned it the name "master antioxidant".
Detoxification
Studied as the key helper molecule the liver uses to tag toxins and drugs for safe removal (Phase-II conjugation).
Skin-tone research
Investigated for its effect on the pigment enzyme tyrosinase, shifting melanin production toward the lighter pheomelanin form.
Redox-biology tool
The GSH/GSSG ratio is a standard laboratory readout of a cell’s overall redox (oxidative-stress) state.
Overview
Glutathione (GSH) is a three-amino-acid peptide that serves as the body’s principal antioxidant and a central hub of redox balance, detoxification, and cellular thiol defence.
Glutathione is a tripeptide — γ-glutamyl-cysteinyl-glycine — found in essentially every cell in the body, usually at higher concentrations than any other small-molecule antioxidant. The business end of the molecule is the cysteine residue: its reactive sulfhydryl (-SH) group is what lets glutathione donate electrons, neutralise free radicals, and shuttle reactive species toward safe disposal.
Functionally, GSH sits at the centre of three overlapping systems. As an antioxidant it both scavenges reactive oxygen species directly and feeds the glutathione peroxidase enzymes that break down peroxides. As a redox buffer it cycles between its reduced (GSH) and oxidised (GSSG) forms, with the GSH/GSSG ratio acting as a master indicator of a cell's redox state. And as a detoxifier it is the required partner for glutathione S-transferases, which conjugate toxins and drug metabolites for excretion.
One structural quirk sets glutathione apart from ordinary peptides: its first peptide bond is a γ-linkage from the side chain of glutamate rather than the usual α-bond, which makes it resistant to standard peptidases and is central to how the body recycles it. Supplied here as a research-grade lyophilised powder for in-vitro and preclinical use only.
Mechanism of Action
Glutathione protects cells through its reactive cysteine thiol: it scavenges reactive oxygen species, powers the glutathione peroxidase antioxidant enzymes, cycles through the GSH/GSSG redox couple, and conjugates toxins for Phase-II detoxification.
Glutathione is synthesised in two ATP-dependent steps (γ-glutamylcysteine synthetase, then glutathione synthetase) and turned over via the γ-glutamyl cycle, in which membrane γ-glutamyl transferase cleaves extracellular GSH for amino-acid salvage — the reason intravenous GSH clears from plasma within minutes. The reduced/oxidised ratio (GSH:GSSG), normally heavily weighted toward GSH, is a canonical biomarker of oxidative stress in redox biology. In melanocyte research, glutathione both inhibits the copper-dependent enzyme tyrosinase and biases the melanin pathway from darker eumelanin toward lighter pheomelanin, which is the proposed basis for its study in skin-tone work. Oral GSH is poorly bioavailable because of gut hydrolysis, so injectable GSH and precursor approaches such as N-acetylcysteine dominate the experimental literature.
Common Questions People Are Asking
What is glutathione used for in research?
Glutathione (GSH) is studied as the body’s principal antioxidant and a hub of redox balance and detoxification. Research examines its role in scavenging reactive oxygen species, powering glutathione peroxidase enzymes, buffering the cellular redox state via the GSH/GSSG ratio, supporting Phase-II detoxification, and — separately — its effect on skin pigmentation via tyrosinase. It is supplied here for laboratory research only and is not for human use.
Why is glutathione called the "master antioxidant"?
Because it is both the most abundant small-molecule antioxidant in the cell and a central node that supports the others — it powers the glutathione peroxidase enzymes that break down peroxides and regenerates the oxidised forms of vitamins C and E, effectively recycling the wider antioxidant network rather than acting alone.
What is the difference between GSH and GSSG?
GSH is reduced (active) glutathione; GSSG is the oxidised form, made of two glutathione molecules joined by a disulfide bond. GSH donates electrons and becomes GSSG; the enzyme glutathione reductase regenerates GSH from GSSG using NADPH. The ratio of the two (normally heavily weighted toward GSH) is a standard laboratory measure of oxidative stress.
Why is glutathione usually injected rather than taken orally?
Oral glutathione is poorly bioavailable because it is largely hydrolysed in the gut before absorption. That is why research protocols favour intravenous or intramuscular routes, or precursor strategies such as N-acetylcysteine (NAC) that help cells make their own glutathione. Note that injected GSH also clears from plasma quickly, within minutes, due to rapid enzymatic turnover.
How should glutathione be stored?
Keep the lyophilised powder frozen at −20 °C, protected from light and moisture. After reconstitution, refrigerate at 1–6 °C and use it promptly — reduced glutathione oxidises to GSSG on exposure to air, so minimise headspace and avoid prolonged storage of the dissolved solution.
Where can I buy Glutathione?
Right here — Glutathione is supplied directly by New-U Research Compounds on this page. Every batch is independently third-party tested to >99% HPLC purity with a batch-linked Certificate of Analysis, supplied as lyophilised research-grade material, and shipped direct from source worldwide in discreet, tracked packaging. Strictly for laboratory research use only — not for human use.
How much does Glutathione cost?
Glutathione pricing is shown live on this page, per pack size — 10-vial research packs as standard, with single-vial sample options on selected compounds. Larger vial strengths lower the per-mg cost, every order includes the batch Certificate of Analysis, and shipping is free on orders over $300.
Is Glutathione third-party tested?
Yes. Every Glutathione batch is verified by independent laboratories (Janoshik Analytics and Freedom Diagnostics) for identity and purity, with a batch-linked Certificate of Analysis confirming >99% purity by HPLC. Every order ships with its COA, and current batch certificates are published on our COA page.
How do I buy Glutathione?
Add the Glutathione pack size you need to your cart and check out: enter your shipping details, then choose your payment method — cryptocurrency or card — on the next step. Every order ships with its batch Certificate of Analysis (COA). Glutathione is supplied strictly for laboratory research use only, not for human or veterinary use.
What payment methods can I use to buy Glutathione?
At checkout you can pay by cryptocurrency (BTC, ETH, SOL, LTC, USDC, USDT and more) or by card, each handled by a dedicated secure payment provider. You choose your method after confirming your order.
How fast is shipping, and do you ship worldwide?
Yes — we ship worldwide in discreet, unmarked, temperature-stable, tracked packaging. Delivery typically takes 6–14 business days, and shipping is free on orders over $300.
Is it legal to buy Glutathione?
In the United States, Glutathione is sold strictly for laboratory and research purposes only. It is not approved by the FDA for human consumption and is not sold for that purpose. Regulatory status varies by jurisdiction — buyers are responsible for compliance in their own region.
Pharmacokinetics
Evidence Tier
Overall: Mixed (human + animal)
Glutathione is an endogenous tripeptide whose antioxidant, redox-buffering (GSH/GSSG) and Phase-II detoxification roles are textbook-established human biochemistry. Interventional human studies of supplemental intravenous and oral glutathione (skin-tone/pigmentation and oxidative-stress endpoints) exist but are of variable size and quality, and oral bioavailability is poor. As a supplied research compound it is unapproved laboratory material, not an approved drug.
Tier 1 · Human clinical
Source References & Further Reading
Last reviewed: 26 June 2026 · New-U Research Compounds
Key Characteristics
Specifications
About Glutathione (GSH): Master Antioxidant Tripeptide Research Guide
Glutathione is often called the body's "master antioxidant", and the title is earned: it is the most abundant small-molecule thiol in human cells and sits at the intersection of antioxidant defence, redox signalling, and detoxification. Structurally it is a simple tripeptide — γ-glutamyl-cysteinyl-glycine — but the unusual γ-linkage on its glutamate and the reactive sulfhydryl group on its cysteine give it chemistry that ordinary peptides do not have.
Its biology runs on a cycle. Reduced glutathione (GSH) gives up electrons to neutralise reactive oxygen species or to feed the glutathione peroxidase enzymes, becoming oxidised glutathione (GSSG) in the process; the enzyme glutathione reductase then uses NADPH to convert GSSG back to GSH. The ratio between the two forms is one of the most widely used laboratory indicators of oxidative stress. In parallel, glutathione is the required partner for the glutathione S-transferase enzymes that the liver uses to tag toxins, drug metabolites, and other electrophiles for safe removal — the Phase-II conjugation step of detoxification.
Glutathione also has a well-known line of skin-tone research: it inhibits tyrosinase (the rate-limiting enzyme of melanin synthesis) and biases the melanin pathway away from darker eumelanin toward lighter pheomelanin. New-U Research Compounds supplies glutathione as a research-grade lyophilised powder at 99.10% HPLC purity, verified by an independent third-party lab (Janoshik, task #196352, June 2026). All material is strictly for in-vitro and preclinical research use; it is not for human use and nothing on this page is medical advice.
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