is glutathione a drug What Glutathione? Summary of Glutathione: Lights and Shadows in

IV glutathione often provides immediate benefits within hours for a few days

Food and Drug Administration) IV produces higher immediate blood levels and may act faster, but evidence shows limited sustained benefit and higher safety risk compared with oral or topical forms

Virchows Arch (2014) 465(1):2533

Through experimentation, the researchers demonstrated that glutathione amino acid precursors effectively increase cellular GSH levels, protects skin cells from oxidative and environmental stressors, reduces UV-induced DNA damage, and supports epidermal barrier function

SLC25A39 is necessary for mitochondrial glutathione import in mammalian cells