Encapsulating glutathione in liposomes is an effective means of glutathione delivery, allowing for more absorption and protecting the glutathione from the harsh environment of the stomach. A clinical study found that adults taking two doses (500mg and 1000mg) of glutathione in a liposomal form, per day over one month, increased their glutathione levels by 40% in whole blood accompanied by a reduction in oxidative stress. In the same study, enhancement in immune system function markers was observed. The study's findings support the effectiveness of daily consumption of glutathione encapsulated in liposomes at elevating stores of glutathione and impacting immune function and levels of oxidative stress.