L-Glutathione — specifically in its reduced form (GSH) — is a tripeptide (glutamate-cysteine-glycine) that serves as the primary intracellular antioxidant in mammalian cells. It's involved in neutralizing reactive oxygen species (ROS), supporting immune cell function, and maintaining the redox environment that cells depend on for normal metabolic activity. Its central role in cellular biology makes it one of the most widely studied compounds in antioxidant research.

Research has explored glutathione's role across multiple biological systems. Studies have investigated its function in detoxification pathways, its involvement in regulating apoptosis, and its interaction with other antioxidant enzymes like glutathione peroxidase and glutathione reductase. Reduced glutathione (GSH) is the active form — it can be oxidized to GSSG, and the GSH/GSSG ratio is commonly used as a marker of oxidative stress in research models.

Researchers also study glutathione in the context of mitochondrial function, immune system biology, and cellular aging, where declining intracellular GSH levels have been associated with increased oxidative burden in aging tissue models. Its involvement in phase II detoxification also makes it relevant to pharmacological and toxicology research.

myPEPT supplies L-Glutathione (reduced) at ≥99% verified purity with a Certificate of Analysis from independent lab testing. Shipped across the EU in sealed, research-grade packaging suitable for laboratory intake.

What researchers should know: This product is supplied for laboratory research use only. It is not intended as a dietary supplement or for human consumption in this form. Handle in accordance with standard lab protocols for biological research compounds.