glutathione is in what foods Eat These to Increase Your Body Glutathione Foods to Raise Glutathione

And it seems to depend a lot on peoples lifestyle habits, like diet and exercise routine

Nrf 2 activation putatively mediates clinical benefits of low-dose radiotherapy in COVID-19 pneumonia and acute respiratory distress syndrome (ARDS): novel mechanistic considerations

Some people notice improvements in energy or mental clarity within a few weeks, while the deeper benefits for cellular health and organ protection are cumulative and often take several months of consistent use to fully manifest.

Exosomes derived from BMSCs enhance diabetic wound healing through circ-Snhg11 delivery

According to Stacpoole et al

Food consumed before drinking slows gastric absorption and lowers peak BAC, but does not change how fast the liver oxidizes ethanol already circulating in the bloodstream