This page discusses Melanotan I and II, including their variations, how they function, the potential properties, and, most importantly, in what circumstances these peptides are approved.   Melanotan 1 and 2 Peptides: What Are They? Melanotan I, or Afamelanotide, is a 13-amino acid peptide. Alpha-melanocyte stimulating hormone (a-MSH) [i] is a synthetic peptide study that […]