Here's another reason why the glutathione and vitamin C combo is unique
Our team has observed that for studies focusing on long-term, sustained NNMT inhibition where slight variations in peak plasma concentration aren't catastrophic, the oral route might be sufficient
Glutathione peroxidase Glutathione peroxidase ( GPx ) (EC 1 } : CS1 maint: DOI inactive as of July 2025 (link) "The many 'faces' of copper in medicine and treatment"
Shih AY, Erb H, Sun X, Toda S, Kallivas PW, Murphy TH
Immune system: Lowers bacterial infection rates, restores immune cell functions, and eliminates certain bacteria (e.g., tuberculosis)
GHK-Cu also influences the ubiquitin-proteasome system (UPS), upregulating dozens of genes involved in protein degradation and cellular maintenance, thereby supporting proteostasis under stress conditions (Pickart and Margolina 2018)