Glutathione is often called the body's master antioxidant molecule, but what exactly is it chemically? In this guide we explain, research-only, what glutathione is, why it differs chemically from other peptides, and which research themes it is studied within.
Glutathione is a tripeptide of glutamate, cysteine and glycine, with an unusual gamma-peptide bond. It is studied in relation to cellular antioxidant balance and oxidative stress. No proven intervention in humans, research-grade material only.
What is glutathione?
Glutathione is a tripeptide made up of three amino acids: glutamate, cysteine and glycine. It is one of the most abundant peptides in the body, produced in almost every cell. New to peptides? First read what peptides are and what a peptide bond is.
Why is glutathione a chemical exception?
Unlike most peptides, the bond between glutamate and cysteine in glutathione is a gamma-peptide bond: formed via glutamate's side chain instead of the usual alpha-carboxyl group. That unusual bond makes glutathione resistant to breakdown by most peptidases — a property relevant to the molecule's stability in research.
Glutathione within longevity research
In research, intracellular glutathione concentration is linked to cellular redox balance and defence against oxidative stress. That places glutathione alongside other longevity research peptides such as NAD+ and SS-31, within the anti-ageing & longevity category. These descriptions come from preclinical and physiological research and are no proof of effect or usage advice.
Purity and documentation
Reproducible research with glutathione requires material with verified purity and full traceability. Every batch at Peptide Lab is tested by Janoshik Analytical, with a public certificate per lot number. Read more about our approach on the science page.
This information is general and intended solely for a research context. Peptide Lab supplies glutathione for laboratory and research purposes only. Not for human or animal consumption, not a medicine and not medical advice.
Frequently asked questions about glutathione
What is glutathione?
Glutathione is a tripeptide of three amino acids — glutamate, cysteine and glycine — produced in almost every cell of the body. It is studied within research into the cellular antioxidant system.
Is glutathione the same as a regular research peptide?
Glutathione is technically a tripeptide, but with a unique feature: the bond between glutamate and cysteine is a gamma-peptide bond rather than the usual peptide bond. That makes it chemically slightly different from most research peptides.
Why is glutathione mentioned in longevity research?
In research, intracellular glutathione concentration is linked to cellular redox balance and oxidative stress. That makes it a recurring research subject within longevity and cell-biology research, without implying a proven intervention in humans.
Is glutathione from Peptide Lab pure?
Yes, glutathione is lab-verified for purity by HPLC and mass spectrometry, with a public Janoshik certificate per batch. For research purposes only.
