glutathione meaning L- vs Glutathione: A Detailed Distinction glutathione iv means Glutathione is

These treatments may reduce anxiety, improve sleep quality, and enhance mental clarity

doi:10.1038/nrrheum.2014.189 245

GHK-Cu , or Copper Peptide GHK-Cu , is a naturally occurring compound found in the body that combines glycyl-L-histidyl-L-lysine (GHK) with a copper ion (Cu)

Illustratively, it is produced in the central nervous system (i.e., brainstems raphe nuclei) (12% of the serotonin in the human body), skin (i.e., Merkel cells), lung (pulmonary neuroendocrine cells), gastrointestinal tract (90% of the serotonin in the human body) (i.e., enterochromaffin cells), and rest of 8% is stored in platelets [166]