The label on your vial is always the final word, but here is the general picture and why it matters
it is a synthetic, stabilized fragment created for research purposes
The journal of nutrition, health & aging
doi: 10.1016/j.cgh.2025.03.002
GSH is a cofactor for dozens of enzymes involved in detoxification.* As an antioxidant, it directly quenches several reactive oxygen species (free radicals).* Numerous structures and functions in the body receive benefit from maintaining normal levels of glutathione, such as hepatic support, pulmonary health, immune function, bowel health, carbohydrate metabolism, cardiovascular health, cognitive health, and eye health.* The liver is the largest reservoir for glutathione in the body
They work well for maintenance phases after initial improvement