This is one of the most common questions we hear
Once in the bloodstream, glutathione is carried throughout the entire body, including the brain, heart, lungs, and muscle tissue, so your cells can benefit from glutathione's detoxifying and protective properties.
Taking supplements can also cause reactions
[DOI] [PubMed] [Google Scholar] Fryburg DA, Jahn LA, Hill SA, Oliveras DM, Barrett EJ
(2013) Safety and Tolerability of the Hexadecapeptide AOD9604 in Humans J Endocrinol Metab 3(12):715 AOD9604 vs Related GH-Axis Research Tools AOD9604s unique combination of GH receptor independence, direct lipolytic activity, absence of IGF-1 stimulation, and confirmed oral bioavailability makes it an irreplaceable research tool for studying adipose tissue metabolism and lipolysis without the systemic endocrine confounds associated with intact hGH or indirect GH secretagogues
Ohnishi et al., 2008)