Oxalate is a primary component of the most common type of kidney stones
pollutants in the air, synthetic chemicals you ingest, over the counter drug medication, synthetic food additives (colorant, artificial sweeteners, preservatives) heavy metals in your water, air fresheners, alcohol, car exhaust
Citrus fruits like oranges and papayas help boost glutathione production
The role of acetaldehyde in the actions of alcohol (update 2000)
While not harmful in small doses, it does not protect against alcohol-related damage and should not encourage drinking.
So, if you want a functionally stable form consistent with glutathiones natural profile in the human body, the reduced option (GSH) is the right choice