glutathione degradation Two pathways of GSH. One way occurs outside the cell where Glutathione - PMC

Subcutaneous, in the abdomen

Standard Dosing Parameters Primary Application Dosing 1-2 mg daily 2-3 mg daily or 2 mg 2-3x per week 1-2 mg daily (injectable or topical) 2-5 mg daily under medical supervision Clinical studies used 0.3 mg/mL injections, while systemic wound healing in animal studies used approximately 1.1 mg/kg body weight (translating to ~75 mg total for humans in divided doses)

"This brightening serum combines different forms of vitamin C with guava extract and seed oil, which together deliver powerful antioxidant benefits and brighten the skin," she says

The choice between them depends on whether you need immediate antioxidant support or long-term cellular protection