Melanotan II Erectile Dysfunction: What the Evidence Shows and Practical Considerations Figure 2 from The efficacy of afamelanotide and narrowband UV B phototherapy for repigmentation of vitiligo. Semantic Scholar Melanotan II (MT II) Peptide Therapy Beverly Hills Here's the part nobody explains when they're selling you the "Barbie drug.", , Melanotan 2 is a synthetic peptide that mimics alpha MSH a hormone your body already makes to tell your skin cells to