In redox chemistry, the reduced form of something is when it keeps its electrons and the oxidized form is when it shares them
D., Chen, K.-H., & Chen, C
(By the way, you can read more about NAC and other options for glutathione supplementation, along with safety guidelines and best practices in What to Avoid When Taking Glutathione)
However, unlike pro-fibrotic agents, GHK-Cu also upregulates the activity of matrix metalloproteinases (MMPs) and their inhibitors (TIMPs), facilitating the breakdown of scarred or disorganized collagen
Amongst a number of related variants of isothiocyanates, sulforaphane (SFN) has surfaced as a particularly potent chemopreventive agent based on its ability to target multiple mechanisms within the cell to control carcinogenesis
Glutathione has two forms: reduced (GSH) and oxidized (GSSG)