I just want to add...I was researching Milk Thistle the other day and found this in reference to glutathione.
Treat acute and chronic liver disease. Milk thistle "cleanses" and therefore fortifies the liver, a vital organ responsible for processing everything from nutrients in foods to medications and chemical pollutants. The herb partly accomplishes this task by preventing a reduction in concentrations of glutathione, an amino-acidlike compound that is critical to neutralizing toxins. Some studies indicate that milk thistle can actually increase glutathione levels by as much as 35%.