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What Is Glutathione? Research Guide (UK)

Glutathione is a tripeptide (glutamate–cysteine–glycine) and one of the most studied endogenous antioxidants in cellular research. This guide explains what glutathione is, the forms used in the laboratory, why it is studied, and how to source research-grade material in the UK with independently verified purity.

What is glutathione?

Glutathione (GSH) is a low-molecular-weight peptide present in virtually all mammalian cells, where it is central to redox balance. It is one of the primary intracellular antioxidants and a common reference compound in oxidative-stress research. AllMyPeptides supplies glutathione strictly for laboratory research use.

Forms of glutathione

Glutathione exists in a reduced form (GSH) and an oxidised form (GSSG); the ratio between them is a widely used marker of cellular redox state in research models. Research material is typically supplied as lyophilised reduced glutathione, reconstituted before use.

Why glutathione is studied

Researchers use glutathione across oxidative-stress pathways, cellular redox signalling, detoxification enzyme systems (such as glutathione S-transferases), and mitochondrial-function models. Because it is a benchmark antioxidant, identity and purity verification are essential for reproducible results.

Research-grade purity & verification

Every batch of glutathione supplied by AllMyPeptides is independently HPLC- and mass-spectrometry-tested to 99%+ purity by accredited third-party UK laboratories, with a batch-matched Certificate of Analysis tied to the lot number on your vial. Learn how to read a COA and how to interpret HPLC results.

Choosing a research-grade supplier

Reproducible research depends on documented, third-party-verified material. Look for independent HPLC and mass-spectrometry testing, a batch-matched COA (not a generic document), transparent UK sourcing, and lot traceability — the standard every AllMyPeptides order is held to.

Handling & reconstitution

Lyophilised glutathione should be reconstituted with bacteriostatic water and stored correctly. See the reconstitution guide, the storage guide, and the free reconstitution calculator.

Where glutathione fits

Glutathione is part of our anti-ageing & longevity research range. View glutathione pricing and COA, or read what research peptides are.

Is glutathione legal to buy in the UK?

Glutathione may be supplied and purchased in the UK when it is used strictly for laboratory research and not for human consumption. See Are peptides legal in the UK? and MHRA & research peptides.

All products and tools on this page are for laboratory and in-vitro research use only. Nothing here is medical, dosing, or usage guidance. Products are not for human or veterinary consumption, diagnostic, or therapeutic use. Purchasers must be qualified researchers aged 18 or over.

For research use only. All products sold by AllMyPeptides are intended strictly for in-vitro laboratory research and are not for human or veterinary consumption, diagnostic, or therapeutic use.