Glutathione is a tripeptide composed of cysteine, glycine and glutamine. Glutathione Setria™ in Angard is the first reduced glutathione to be clinically studied to increase glutathione levels in the blood. The term reduced glutathione refers to a glutathione structure that is ready to donate electrons to free radicals. In addition, it is a powerful antioxidant critical for cellular defense against oxidative stress. It supports overall cellular health and longevity by helping to neutralize harmful free radicals.