PT-141 (bremelanotide) is a derivative of MT-II that was specifically modified to target MC4R for sexual dysfunction
The active functional core of glutathione is the thiol (sulfhydryl, -SH) group located on the cysteine residue, which acts as the primary electron donor
Its higher potency and broader receptor engagement likely amplify melanogenesis as well as UV-seeking behavior and other systemic factors
Further research is needed with aging, fit, healthy subjects, measuring a variety of physiologic and metabolic endpoints to determine if the results of this case study prevail, and if so, the mechanism of any such benefits achieved
This class of medications sounds pretty new because the excitement surrounding the drugs (and celeb interest) has exploded in recent years, but GLP-1s have been around for 20 years
"Folic acid, pyridoxine, and cyanocobalamin combination treatment and age-related macular degeneration in women: the Women's Antioxidant and Folic Acid Cardiovascular Study"