L-Glutathione

L-Glutathione 20ml Vial from Xcel Peptides

Xcel Peptides supplies L-Glutathione as a tripeptide research compound in a 20ml sterile vial for laboratory use. We test every batch independently before release, and we publish the certificate of analysis on this page, matched to the batch number on your vial. Our L-Glutathione comes from a GMP-certified, fully audited production facility.

What’s in L-Glutathione

Glutathione is a tripeptide built from three amino acids: glutamine, cysteine, and glycine. In laboratory research, it functions as a critical antioxidant, primarily reducing reactive oxygen species through its thiol group. Each milliliter contains 200mg of glutathione. We run dual independent lab testing on every batch to verify actual ingredient quantity and purity.

L-Glutathione Specifications

The vial holds a sterile solution, 20ml in volume, at 200mg/mL concentration, research grade. We verify it through third-party HPLC and identity analysis, and we document every batch with a matched COA. Refrigerate the vial and protect it from light. We ship every order cold-chain with tracking.

L-Glutathione Research Applications

Researchers study L-Glutathione primarily in redox biology and oxidative stress research. Its thiol group makes it central to investigations of reactive oxygen species reduction and cellular antioxidant defense mechanisms. Scientists also use it in studies of glutathione S-transferase conjugation reactions and thiol-disulfide exchange processes. These applications support broader research into intracellular antioxidant capacity and biochemical detoxification pathways.

These describe research applications, not therapeutic claims. The FDA has not evaluated L-Glutathione, and researchers should not use it to diagnose, treat, cure, or prevent any condition.

Why Buy L-Glutathione From Xcel Peptides

A GMP-certified, fully audited, fully regulated facility produces our L-Glutathione — a standard of quality control most research amino vendors don’t reach. We don’t rely on a single test either. Dual independent labs verify each batch, so you can confirm actual ingredient quantity and purity before you use it, not just take our word for it.

We ship every L-Glutathione order with cold-chain packaging as standard. Glutathione oxidizes readily once exposed to unfavorable conditions, so temperature control during transit protects the compound’s stability.

Storage and Handling

Refrigerate L-Glutathione and keep the vial sealed and shielded from light. Glutathione stays stable in its reduced form intracellularly but oxidizes readily outside that environment, so minimize air exposure once you open the vial. Avoid repeated warming and cooling, since temperature cycling accelerates degradation. Store lyophilized material colder still if you’re working from powder rather than solution.

Verifying Your L-Glutathione COA

Check three things on the COA before you use your L-Glutathione. First, confirm the batch number matches your vial. Second, confirm the test date is recent. Third, confirm the concentration matches the 200mg/mL specification above. If you need archived data for a previous lot, contact our team and we’ll pull it for you.

Disclaimer (place directly under description): Xcel Peptides supplies L-Glutathione for laboratory and research use only. It is not a drug, dietary supplement, or food, and researchers should not use it for human or animal consumption, or for diagnostic or therapeutic use. Nothing on this page constitutes medical advice.

Frequently Asked Questions

What is L-Glutathione? L-Glutathione is a tripeptide composed of glutamine, cysteine, and glycine. Xcel Peptides supplies it in a 20ml sterile vial at 200mg/mL for research use.

Does L-Glutathione come with a COA? Yes. Xcel Peptides ships every L-Glutathione vial with a batch-matched certificate of analysis, verified through dual independent lab testing.

How should I store L-Glutathione? Refrigerate it, keep it sealed, protect it from light, and avoid repeated temperature cycling, since glutathione oxidizes readily once exposed.

What is L-Glutathione used for in research? Researchers use it primarily to study antioxidant activity and reactive oxygen species reduction through its thiol group, along with related redox biology mechanisms.

How fast does Xcel Peptides ship L-Glutathione? We ship most orders within 1 to 2 business days, with cold-chain packaging and tracking included.