What is glutathione, how does it work and why is Setria® Glutathione the best choice for oral supplementation? We invite you to download the Kyowa sponsored Natural Medicine Journal Research Guide to learn more about this powerful antioxidant that supports immune health and detoxification. The guide also discussed the myth of oral glutathione absorption and reports how clinical trials on Setria® showed an increase in both glutathione blood levels and NK cell activity.