Melanotan II is not to be confused with melanotan I, also called afamelanotide
But unlike natural GLP-1, which decays very rapidly (its half-life is just 2 minutes), synthetic GLP-1 receptor agonists are long-acting and remain active in your body for hours or days
doi.org/10.1016/j.molmed.2005.07.004 Bock-Marquette, I., et al
Conversely, oral glutathione supplements show very little benefit over injectable forms
Factors affecting injection duration include the underlying cause of deficiency, pregnancy, inflammatory conditions, and medications such as metformin and proton pump inhibitors
Though the mechanism(s) underlying the decreased risk of incident and recurrent CUD with semaglutide is unclear, several mechanisms could be involved