Glutathione is found in every cell of the body and is particularly abundant in the liver, where it plays a key role in detoxification
Liu Y, Ren L, Ge L, Cui Q, Cao X, Hou Y, et al
Doctors often recommend it as part of long-term therapy for patients who have absorption problems or cannot maintain sufficient B12 through diet alone
(5) R C Rosen, L E Diamond, D C Earle, et al (2004) Evaluation of the safety, pharmacokinetics and pharmacodynamic effects of subcutaneously administered PT-141, a melanocortin receptor agonist, in healthy male subjects and in patients with an inadequate response to Viagra International Journal of Impotence Research, volume 16, pages 135142 (2004)
10.1152/japplphysiol.00371.2004
The CTD database ( reports the effect of environmental chemicals including selenium on gene expression profiles in various human tissues