sod catalase and glutathione peroxidase Full article: First line defence antioxidants-superoxide dismutase (SOD), (CAT) (GPX): Their fundamental role in the entire antioxidant defence grid Glutathione peroxidase - Wikipedia

The incretin mimetic Exendin-4 has been shown to restore FOXA2 expression by activating the GLP1R-PKA-PPAR--dependent phosphatases PTEN and PTP1B, which dephosphorylate key kinases in pro-goblet cell EGFR-AKT/ERK1/2 and IL-4/IL-13-STAT6-SPDEF signaling pathways, lowering mucin production, and reduce P

Whey protein can increase intracellular glutathione by up to 64% while providing protection against oxidative stress

1998 Jun 15;103(2):123-32

What the margin difference looks like in practice: Community sources describe the room-temperature-stored punctured vial as more likely to reach the boundary of preservative efficacy within the 28-day window still technically within the documented period, but with less safety margin