glutathione reductase uses nadph to reduce gssg to gsh NOX-like ROS production by glutathione

However, if not supervised by a medical doctor, you could be provided with a standard IV therapy that may not work for your unique skin concerns or, even worse, could hurt your body

Krajcovicova-Kudlackova, M., et al

Increased metabotropic glutamate receptor 5 signaling underlies obsessive-compulsive disorder-like behavioral and striatal circuit abnormalities in mice

Reduced and bioavailable forms: Supply glutathione in its active, reduced state, allowing cells to utilise it immediately without additional metabolic conversion (NIH)

KIRSCH, R

It typically takes time for your body to metabolize the NAC, break it down into cysteine, and then synthesize the glutathione within the cells